1 Legendre's constant http://en.wikipedia.org/wiki/Legendre%27s_constant
2 "An infinite number of mathematicians..." http://derdritte.soup.io/post/6961628/An-infinite-number-of-mathematicians-walk-into
3 A Unicode character XML "numeric character reference" http://en.wikipedia.org/wiki/Unicode_and_HTML
4 Modular arithmetic http://en.wikipedia.org/wiki/Modular_arithmatic
5 The Golden Mean reworked a little http://en.wikipedia.org/wiki/Golden_ratio
6 Three Factorial (3*2*1) http://en.wikipedia.org/wiki/Factorial
7 6.99999.. Though a different number than 7, still equals 7 http://en.wikipedia.org/wiki/Repeating_decimal
8 Graphical representation of Binary code http://en.wikipedia.org/wiki/Binary_numeral_system
9 An example of a base-4 number http://en.wikipedia.org/wiki/Quaternary_numeral_system
10 A Binomial Coefficient http://en.wikipedia.org/wiki/Pascal%27s_triangle
11 An example of Hexadecimal encoding http://en.wikipedia.org/wiki/Hexadecimal
12 The cube root is the inverse of 12^3 http://en.wikipedia.org/wiki/Cube_root
