12 Days of Christmas
357605
99 Bottles of Beer
Abundant Numbers
698
Christmas Trees
624
Collatz
873
Diamonds
317
Divisors
892
Fibonacci
927
Fizz Buzz
797829
Happy Numbers
389
Intersection
695
Kolakoski Sequence
644
Leap Years
755
Look and Say
528630
Niven Numbers (Long)
790
Ordinal Numbers
666
Pascal’s Triangle
641
Prime Numbers
660
Quine
930
Roman to Arabic
437
Seven Segment
640
Sierpiński Triangle
448
φ
192
√2
210