12 Days of Christmas
357604
99 Bottles of Beer
797
Abundant Numbers
698
Christmas Trees
623
Collatz
873
Diamonds
317
Divisors
891
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
664
Pascal’s Triangle
641
Prime Numbers
660
Quine
924
Roman to Arabic
436
Seven Segment
639
Sierpiński Triangle
399
φ
191
√2
210