12 Days of Christmas
341
99 Bottles of Beer
371
Abundant Numbers
700
Abundant Numbers (Long)
775
Arabic to Roman
213
Arithmetic Numbers
626
Arrows
413
Catalan Numbers
710
Christmas Trees
524
Collatz
695
Diamonds
304
Divisors
720
Emirp Numbers
458
Emirp Numbers (Long)
529
Evil Numbers
741
Evil Numbers (Long)
732
Fibonacci
800
Fizz Buzz
564
Foo Fizz Buzz Bar
465
Fractions
475
Happy Numbers
480
Intersection
598
Leap Years
652
Leyland Numbers
590
Lucky Numbers
449
Morse Encoder
147
Niven Numbers
710
Niven Numbers (Long)
781
Odious Numbers
755
Odious Numbers (Long)
759
Ordinal Numbers
468
Pangram Grep
587
Pascal’s Triangle
365
Pernicious Numbers
678
Prime Numbers
635
Prime Numbers (Long)
595
Recamán
663
Rijndael S-box
114
Roman to Arabic
222
Seven Segment
275
Sierpiński Triangle
132
Smith Numbers
551
Sudoku
196
Ten-pin Bowling
168
Tongue-twisters
346
United States
119
Vampire Numbers
431
Van Eck Sequence
654
√2
645