Abundant Numbers
727
Abundant Numbers (Long)
796
ASCII Table
569
Catalan Numbers
836
Christmas Trees
615
Collatz
708
Divisors
911
Emirp Numbers
868
Emirp Numbers (Long)
555
Evil Numbers
853
Evil Numbers (Long)
831
Fibonacci
933
Fizz Buzz
890
Foo Fizz Buzz Bar
781
Fractions
621
Happy Numbers
586
Happy Numbers (Long)
728
Inventory Sequence
753
Leap Years
845
Leyland Numbers
810
Look and Say
587
Lucky Numbers
667
Niven Numbers
781
Niven Numbers (Long)
863
Odious Numbers
849
Odious Numbers (Long)
845
Ordinal Numbers
553
Pascal’s Triangle
838
Pernicious Numbers
763
Pernicious Numbers (Long)
761
Poker
348
Prime Numbers
834
Prime Numbers (Long)
890
Quine
946
Recamán
835
Repeating Decimals
338
Roman to Arabic
530
Smith Numbers
560
Time Distance
381
Tongue-twisters
409
Vampire Numbers
548
Van Eck Sequence
786
π
402
τ
393
φ
682
√2
686
𝑒
681