12 Days of Christmas
873
99 Bottles of Beer
685
Abundant Numbers
707
Abundant Numbers (Long)
875
Arithmetic Numbers
722
Arrows
244
Christmas Trees
635
Collatz
911
Divisors
490
984
Emirp Numbers
611
Emirp Numbers (Long)
686
Emojify
297
Evil Numbers
872
Evil Numbers (Long)
849
Factorial Factorisation
95
Farey Sequence
640
Fibonacci
934
Fizz Buzz
855
709
976
Foo Fizz Buzz Bar
323
986
Forsyth–Edwards Notation
651
Fractions
660
Happy Numbers
632
Happy Numbers (Long)
727
ISBN
734
Leap Years
815
Look and Say
476
Morse Encoder
252
Niven Numbers
759
Niven Numbers (Long)
827
Number Spiral
247
Odious Numbers
833
Ordinal Numbers
680
Pangram Grep
909
Pascal’s Triangle
835
Pernicious Numbers
798
Prime Numbers
934
Prime Numbers (Long)
701
Quine
946
Recamán
726
Seven Segment
430
Smith Numbers
547
Time Distance
662
Tongue-twisters
487
United States
304
π
329
φ
593
√2
981
𝑒
977