Abundant Numbers
730
Abundant Numbers (Long)
800
ASCII Table
568
Catalan Numbers
839
Christmas Trees
617
Collatz
735
Divisors
933
Emirp Numbers
871
Emirp Numbers (Long)
567
Evil Numbers
853
Evil Numbers (Long)
832
Fibonacci
935
Fizz Buzz
891
Foo Fizz Buzz Bar
783
Fractions
620
Happy Numbers
589
Happy Numbers (Long)
731
Inventory Sequence
757
Leap Years
847
Leyland Numbers
816
Look and Say
592
Lucky Numbers
673
Niven Numbers
785
Niven Numbers (Long)
870
Odious Numbers
852
Odious Numbers (Long)
848
Ordinal Numbers
579
Pascal’s Triangle
841
Pernicious Numbers
767
Pernicious Numbers (Long)
800
Poker
356
Prime Numbers
835
Prime Numbers (Long)
892
Quine
946
Recamán
840
Repeating Decimals
336
Roman to Arabic
532
Smith Numbers
563
Time Distance
383
Tongue-twisters
410
Vampire Numbers
554
Van Eck Sequence
787
π
403
τ
394
φ
682
√2
704
𝑒
699