Abundant Numbers
761
Abundant Numbers (Long)
904
ASCII Table
721
Catalan Numbers
840
Christmas Trees
709
Collatz
877
Divisors
984
Emirp Numbers
757
Emirp Numbers (Long)
682
Evil Numbers
854
Evil Numbers (Long)
833
Fibonacci
935
Fizz Buzz
977
Foo Fizz Buzz Bar
987
Fractions
730
Happy Numbers
759
Happy Numbers (Long)
863
Inventory Sequence
802
Leap Years
848
Leyland Numbers
959
Look and Say
727
Lucky Numbers
699
Niven Numbers
787
Niven Numbers (Long)
873
Odious Numbers
852
Odious Numbers (Long)
849
Ordinal Numbers
711
Pascal’s Triangle
908
Pernicious Numbers
767
Pernicious Numbers (Long)
816
Poker
681
Prime Numbers
835
Prime Numbers (Long)
893
Quine
944
Recamán
932
Repeating Decimals
459
Roman to Arabic
694
Smith Numbers
766
Time Distance
691
Tongue-twisters
738
Vampire Numbers
751
Van Eck Sequence
832
π
451
τ
442
φ
698
√2
707
𝑒
701