Abundant Numbers
730
Abundant Numbers (Long)
800
ASCII Table
569
Catalan Numbers
840
Christmas Trees
617
Collatz
735
Divisors
933
Emirp Numbers
871
Emirp Numbers (Long)
567
Evil Numbers
854
Evil Numbers (Long)
833
Fibonacci
935
Fizz Buzz
891
Foo Fizz Buzz Bar
783
Fractions
621
Happy Numbers
589
Happy Numbers (Long)
732
Inventory Sequence
758
Leap Years
847
Leyland Numbers
816
Look and Say
592
Lucky Numbers
674
Niven Numbers
785
Niven Numbers (Long)
871
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
841
Repeating Decimals
337
Roman to Arabic
532
Smith Numbers
563
Time Distance
384
Tongue-twisters
410
Vampire Numbers
554
Van Eck Sequence
788
π
403
τ
395
φ
683
√2
704
𝑒
699