Cheat Sheet:
01 – Legendre's constant is a mathematical constant occurring in a formula conjectured by Adrien-Marie Legendre to capture the asymptotic behavior of the prime-counting function. Its value is now known to be exactly 1.
02 – A joke in the math world: An infinite number of mathematicians walk into a bar. The first one orders a beer. The second orders half a beer. The third, a quarter of a beer. The bartender says, «You're all idiots», and pours two beers.
03 – A unicode character XML «numeric character reference».
04 – Modular arithmetic, also known as clock arithmetic, is a system of arithmetic for integers, where numbers «wrap around» after they reach a certain value.
05 – The Golden Mean... reworked a little.
06 – Three factorial: 3*2*1 = 6.
07 – Repeating decimal that rounds up to 7.
08 – Graphical representation of binary code.
09 – An example of a base-4 number, which uses the digits 0, 1, 2 and 3 to represent any real number.
10 – A Binomial Coefficient.
11 – An example of Hexadecimal encoding.
12 – The cubed root of 1728.
