12 Days of Christmas
827
844
99 Bottles of Beer
592
Abundant Numbers
729
Arabic to Roman
629
Arrows
492
Christmas Trees
705
Cubes
555
Diamonds
598
Divisors
905
830
Emirp Numbers
576
Emojify
358
Evil Numbers
769
Fibonacci
800
806
Fizz Buzz
773
714
Fractions
640
1,000
Happy Numbers
646
Happy Numbers (Long)
735
Intersection
435
Kolakoski Constant
656
Kolakoski Sequence
634
584
Leap Years
652
Leyland Numbers
913
Look and Say
552
Morse Decoder
117
Morse Encoder
128
Niven Numbers
688
Odious Numbers
800
Ordinal Numbers
711
Pangram Grep
837
Pascal’s Triangle
730
Pernicious Numbers
339
Prime Numbers
656
689
Recamán
678
Rock-paper-scissors-Spock-lizard
599
Roman to Arabic
587
Seven Segment
558
Sierpiński Triangle
104
Smith Numbers
812
Tongue-twisters
662
United States
346
Vampire Numbers
468
Van Eck Sequence
494
λ
152
π
438
τ
438
φ
729
√2
729
𝑒
640
629