Abundant Numbers
678
681
684
Arabic to Roman
461
631
Christmas Trees
664
Collatz
726
Cubes
648
Diamonds
765
609
Divisors
788
694
946
Emojify
321
Evil Numbers
769
Fibonacci
770
660
716544
933
Fizz Buzz
199377926623419463863733531926635
Happy Numbers
495
Leap Years
686
508
661
Look and Say
506
Morse Encoder
416
Niven Numbers
638
740
Odious Numbers
781
Ordinal Numbers
754
Pascal’s Triangle
739
Pernicious Numbers
393
Prime Numbers
532
740
Quine
946
Rule 110
501
Seven Segment
675
Sierpiński Triangle
429
Tongue-twisters
641
π
85
𝑒
62