12 Days of Christmas
357604
99 Bottles of Beer
796
Abundant Numbers
697
Christmas Trees
621
Collatz
871
Diamonds
317
Divisors
891
Fibonacci
926
Fizz Buzz
797829
Happy Numbers
389
Intersection
692
Kolakoski Sequence
641
Leap Years
754
Look and Say
528628
Niven Numbers (Long)
788
Ordinal Numbers
664
Pascal’s Triangle
638
Prime Numbers
660
Quine
930
Roman to Arabic
436
Seven Segment
639
Sierpiński Triangle
399
φ
191
√2
210