Abundant Numbers
663
721
671
Arabic to Roman
426
461
Christmas Trees
716
Collatz
744
852Cubes
485
Diamonds
847
523
Divisors
822
731
931
Emojify
376
Evil Numbers
784
Fibonacci
793
733
571
706
947
Fizz Buzz
390
947
651
679
875
750
443
549
855
657
Happy Numbers
393
Leap Years
711
567
672
Look and Say
540
Morse Encoder
294
Niven Numbers
671
759
Odious Numbers
800
Ordinal Numbers
641
Pascal’s Triangle
704
Pernicious Numbers
404
Prime Numbers
549
755
Quine
969
Rule 110
444
Seven Segment
526
Sierpiński Triangle
425
Tongue-twisters
375
π
191
𝑒
158