12 Days of Christmas
804827
99 Bottles of Beer
587
Abundant Numbers
713
Arabic to Roman
612
Arrows
473
Christmas Trees
689
Cubes
522
Diamonds
581
Divisors
886788
Emirp Numbers
555
Emojify
351
Evil Numbers
754
Fibonacci
787779
Fizz Buzz
766698
Fractions
622991
Happy Numbers
629
Happy Numbers (Long)
709
Intersection
419
Kolakoski Constant
615
Kolakoski Sequence
611544
Leap Years
640
Leyland Numbers
881
Look and Say
519
Morse Decoder
114
Morse Encoder
123
Niven Numbers
671
Odious Numbers
781
Ordinal Numbers
683
Pangram Grep
811
Pascal’s Triangle
709
Pernicious Numbers
330
Prime Numbers
643660
Recamán
657
Rock-paper-scissors-Spock-lizard
586
Roman to Arabic
566
Seven Segment
532
Sierpiński Triangle
98
Smith Numbers
764
Tongue-twisters
655
United States
306
Vampire Numbers
432
Van Eck Sequence
460
λ
136
π
420
τ
416
φ
694
√2
686
𝑒
621596