Abundant Numbers
742
Abundant Numbers (Long)
821
ASCII Table
580
Catalan Numbers
863
Christmas Trees
628
Collatz
750
Divisors
947
Emirp Numbers
887
Emirp Numbers (Long)
583
Evil Numbers
870
Evil Numbers (Long)
854
Fibonacci
947
Fizz Buzz
898
Foo Fizz Buzz Bar
795
Fractions
639
Happy Numbers
600
Happy Numbers (Long)
753
Inventory Sequence
785
Leap Years
860
Leyland Numbers
838
Look and Say
606
Lucky Numbers
693
Niven Numbers
800
Niven Numbers (Long)
893
Odious Numbers
870
Odious Numbers (Long)
872
Ordinal Numbers
595
Pascal’s Triangle
862
Pernicious Numbers
784
Pernicious Numbers (Long)
823
Poker
362
Prime Numbers
851
Prime Numbers (Long)
917
Quine
969
Recamán
859
Repeating Decimals
348
Roman to Arabic
548
Smith Numbers
580
Time Distance
392
Tongue-twisters
413
Vampire Numbers
569
Van Eck Sequence
815
π
411
τ
406
φ
703
√2
721
𝑒
716