12 Days of Christmas
872
Abundant Numbers
516
670
717
brainfuck
357
510
Catalan Numbers
522
Christmas Trees
581
Collatz
831
Cubes
628
Diamonds
267
Divisors
527
597
967
Emirp Numbers
479
Evil Numbers
444
569
522
809
755
Fibonacci
588
815
938
571
938
384
866
Fizz Buzz
612
693
976
Fractions
457
556
625
Happy Numbers
478
551
674
Happy Numbers (Long)
767
Leap Years
683
Leyland Numbers
473
805
Look and Say
562
Niven Numbers
526
746
Odious Numbers
450
521
813
753
Pascal’s Triangle
574
809
Pernicious Numbers
393
686
Prime Numbers
453
569
748
490
654
Quine
946
Recamán
701
Reverse Polish Notation
535
674
Roman to Arabic
527
Rule 110
441
Sierpiński Triangle
302
Smith Numbers
553
Sudoku
256
308
Sudoku (Fill-in)
276
Van Eck Sequence
318
491
√2
632