12 Days of Christmas
821
83299 Bottles of Beer
588
Abundant Numbers
730
Arabic to Roman
611
Arrows
477
Christmas Trees
758
Cubes
548
Diamonds
586
Divisors
890
801Emirp Numbers
564
Emojify
351
Evil Numbers
754
Fibonacci
789
785Fizz Buzz
768
705Fractions
711
990Happy Numbers
632
Happy Numbers (Long)
711
Intersection
419
Kolakoski Constant
629Kolakoski Sequence
610
546Leap Years
641
Leyland Numbers
885
Look and Say
528Morse Decoder
118
Morse Encoder
125
Niven Numbers
676
Odious Numbers
782
Ordinal Numbers
691
Pangram Grep
813
Pascal’s Triangle
710
Pernicious Numbers
331
Prime Numbers
643
661Recamán
672
Rock-paper-scissors-Spock-lizard
590
Roman to Arabic
568
Seven Segment
544
Sierpiński Triangle
100
Smith Numbers
761Tongue-twisters
657
United States
318
Vampire Numbers
442Van Eck Sequence
463λ
147π
424τ
423φ
707√2
710𝑒
625
608