12 Days of Christmas
402
99 Bottles of Beer
391
Abundant Numbers
678
Abundant Numbers (Long)
776
Arithmetic Numbers
616
Arrows
218
Christmas Trees
553
Collatz
764
Divisors
490933
Emirp Numbers
495
Emirp Numbers (Long)
571
Emojify
268
Evil Numbers
872
Evil Numbers (Long)
849
Factorial Factorisation
76
Farey Sequence
564
Fibonacci
934
Fizz Buzz
848707891
Foo Fizz Buzz Bar
316
783
Forsyth–Edwards Notation
541
Fractions
562
Happy Numbers
490
Happy Numbers (Long)
617
ISBN
573
Leap Years
814
Look and Say
388
Morse Encoder
172
Niven Numbers
757
Niven Numbers (Long)
825
Number Spiral
201
Odious Numbers
833
Ordinal Numbers
554
Pangram Grep
771
Pascal’s Triangle
774
Pernicious Numbers
798
Prime Numbers
934
Prime Numbers (Long)
701
Quine
946
Recamán
656
Seven Segment
314
Smith Numbers
402
Time Distance
368
Tongue-twisters
274
United States
217
π
294
φ
580
√2
977
𝑒
975