12 Days of Christmas
861
99 Bottles of Beer
823
Abundant Numbers
768
Abundant Numbers (Long)
911
Arabic to Roman
799
Arithmetic Numbers
893
Arrows
543
Ascending Primes
748
ASCII Table
720
Calendar
944
Card Number Validation
640
Catalan Numbers
888
Catalan’s Constant
493
Christmas Trees
854
Collatz
867
CSS Colors
255
Day of Week
963
Diamonds
708
Divisors
962
Emirp Numbers
828
Emirp Numbers (Long)
749
Emojify
415
Evil Numbers
980
Evil Numbers (Long)
949
Factorial Factorisation
580
Farey Sequence
523
Fibonacci
933
Fizz Buzz
973
Foo Fizz Buzz Bar
981
Fractions
745
Happy Numbers
774
Happy Numbers (Long)
847
Hexdump
879
Inventory Sequence
863
ISBN
784
Kaprekar Numbers
Kolakoski Constant
672
Kolakoski Sequence
849
Leap Years
899
Leyland Numbers
952
ln 2
964
Medal Tally
747
Niven Numbers
933
Niven Numbers (Long)
848
Number Spiral
458
Odious Numbers
849
Odious Numbers (Long)
827
Ordinal Numbers
836
PalindromemordnilaP
852
Pangram Grep
905
Pascal’s Triangle
921
Pernicious Numbers
779
Pernicious Numbers (Long)
895
Prime Numbers
934
Prime Numbers (Long)
950
Quine
946
Recamán
833
Rijndael S-box
213
Roman to Arabic
802
ROT13
917
Scrambled Sort
893
Seven Segment
732
Spelling Numbers
461
Tongue-twisters
639
Transpose Sentence
859
United States
841
γ
442
π
869
τ
495
φ
935
√2
972
𝑒
970