12 Days of Christmas
357
605
99 Bottles of Beer
796
Abundant Numbers
697
Christmas Trees
620
Collatz
868
Diamonds
317
Divisors
890
Fibonacci
925
Fizz Buzz
797
829
Happy Numbers
389
Intersection
692
Kolakoski Sequence
641
Leap Years
754
Look and Say
527
626
Niven Numbers (Long)
787
Ordinal Numbers
660
Pascal’s Triangle
637
Prime Numbers
659
Quine
927
Roman to Arabic
436
Seven Segment
635
Sierpiński Triangle
399
φ
197
√2
222