99 Bottles of Beer
910
597
Abundant Numbers
758
868
730
Arrows
380
Catalan Numbers
688
Collatz
904
CSS Colors
208
Divisors
855
Evil Numbers
619
Fibonacci
903
890
980
957
697
934
Fizz Buzz
576
812
991
907
905
976
Fractions
634
Game of Life
793
Happy Numbers
630
Leap Years
588
Levenshtein Distance
863
ln 2
240Look and Say
861
Niven Numbers
976
759
Number Spiral
415
Odious Numbers
645
Pascalβs Triangle
817
Pernicious Numbers
490
482
Prime Numbers
392
381
Proximity Grid
345
Quine
1,000
837
865
598
945
Reverse Polish Notation
685
Tongue-twisters
623
United States
214
Van Eck Sequence
408
Ο
336
97
224
203
134
251π
48