Contents -- PART I: FUN PUZZLES AND QUICK THOUGHTS -- 1 Attack of the Amateurs -- 2 Why Don't We Use Roman Numerals Anymore? -- 3 In a Casino -- 4 The Ultimate Bible Code -- 5 How Much Blood? -- 6 Where Are the Ants? -- 7 Spidery Math -- 8 Lost in Hyperspace -- 9 Along Came a Spider -- 10 Numbers beyond Imagination -- 11 Cupid's Arrow -- 12 Poseidon Arrays -- 13 Scales of Justice -- 14 Mystery Squares -- 15 Quincunx -- 16 Jerusalem Overdrive -- 17 The Pipes of Papua -- 18 The Fractal Society -- 19 The Triangle Cycle -- 20 IQ-Block -- 21 Riffraff -- 22 Klingon Paths -- 23 Ouroboros Autophagy -- 24 Interview with a Number -- 25 The Dream-Worms of Atlantis -- 26 Satanic Cycles -- 27 Persistence -- 28 Hallucinogenic Highways -- PART II: QUIRKY QUESTIONS, LISTS, AND SURVEYS -- 29 Why Was the First Woman Mathematician Murdered? -- 30 What If We Receive Messages from the Stars? -- 31 A Ranking of the 5 Strangest Mathematicians Who Ever Lived -- 32 Einstein, Ramanujan, Hawking -- 33 A Ranking of the 8 Most Influential Female Mathematicians -- 34 A Ranking of the 5 Saddest Mathematical Scandals -- 35 The 10 Most Important Unsolved Mathematical Problems -- 36 A Ranking of the 10 Most Influential Mathematicians Who Ever Lived -- 37 What Is Gödel's Mathematical Proof of the Existence of God? -- 38 A Ranking of the 10 Most Influential Mathematicians Alive Today -- 39 A Ranking of the 10 Most Interesting Numbers -- 40 The Unabomber's 10 Most Mathematical Technical Papers -- 41 The 10 Mathematical Formulas That Changed the Face of the World -- 42 The 10 Most Difficult-to-Understand Areas of Mathematics -- 43 The 10 Strangest Mathematical Titles Ever Published -- 44 The 15 Most Famous Transcendental Numbers -- 45 What Is Numerical Obsessive-Compulsive Disorder? -- 46 Who Is the Number King? -- 47 What 1 Question Would You Add? -- 48 Cube Maze.

PART III: FIENDISHLY DIFFICULT DIGITAL DELIGHTS -- 49 Hailstone Numbers -- 50 The Spring of Khosrow Carpet -- 51 The Omega Prism -- 52 The Incredible Hunt for Double Smoothly Undulating Integers -- 53 Alien Snow: A Tour of Checkerboard Worlds -- 54 Beauty, Symmetry, and Pascal's Triangle -- 55 Audioactive Decay -- 56 Dr. Googol's Prime Plaid -- 57 Saippuakauppias -- 58 Emordnilap Numbers -- 59 The Dudley Triangle -- 60 Mozart Numbers -- 61 Hyperspace Prisons -- 62 Triangular Numbers -- 63 Hexagonal Cats -- 64 The X-Files Number -- 65 A Low-Calorie Treat -- 66 The Hunt for Elusive Squarions -- 67 Katydid Sequences -- 68 Pentagonal Pie -- 69 An A? -- 70 Humble Bits -- 71 Mr. Fibonacci's Neighborhood -- 72 Apocalyptic Numbers -- 73 The Wonderful Emirp, 1,597 -- 74 The Big Brain of Brahmagupta -- 75 1,001 Scheherazades -- 76 73,939,133 -- 77 [omitted] Numbers from Los Alamos -- 78 Creator Numbers [omitted] -- 79 Princeton Numbers -- 80 Parasite Numbers -- 81 Madonna's Number Sequence -- 82 Apocalyptic Powers -- 83 The Leviathan Number [omitted] -- 84 The Safford Number: 365,365,365,365,365,365 -- 85 The Aliens from Independence Day -- 86 One Decillion Cheerios -- 87 Undulation in Monaco -- 88 The Latest Gossip on Narcissistic Numbers -- 89 The abcdefghij Problem -- 90 Grenade Stacking -- 91 The 450-Pound Problem -- 92 The Hunt for Primes in Pi -- 93 Schizophrenic Numbers -- 94 Perfect, Amicable, and Sublime Numbers -- 95 Prime Cycles and [omitted] -- 96 Cards, Frogs, and Fractal Sequences -- 97 Fractal Checkers -- 98 Doughnut Loops -- 99 Everything You Wanted to Know about Triangles but Were Afraid to Ask -- 100 Cavern Genesis as a Self-Organizing System -- 101 Magic Squares, Tesseracts, and Other Oddities -- 102 Fabergé Eggs Synthesis -- 103 Beauty and Gaussian Rational Numbers -- 104 A Brief History of Smith Numbers -- 105 Alien Ice Cream.

PART IV: THE PERUVIAN COLLECTION -- 106 The Huascarán Box -- 107 The Intergalactic Zoo -- 108 The Lobsterman from Lima -- 109 The Incan Tablets -- 110 Chinchilla Overdrive -- 111 Peruvian Laser Battle -- 112 The Emerald Gambit -- 113 Wise Viracocha -- 114 Zoologic -- 115 Andromeda Incident -- 116 Yin or Yang -- 117 A Knotty Challenge at Tacna -- 118 An Incident at Chavín de Huántar -- 119 An Odd Symmetry -- 120 The Monolith at Madre de Dios -- 121 Amazon Dissection -- 122 3 Weird Problems with 3 -- 123 Zen Archery -- 124 Treadmills and Gears -- 125 Anchovy Marriage Test -- Further Exploring -- Further Reading -- About the Author -- Index -- A -- B -- C -- D -- E -- F -- G -- H -- I -- K -- L -- M -- N -- O -- P -- Q -- R -- S -- T -- U -- V -- W -- X -- Y -- Z.