12 Days of Christmas
357605
99 Bottles of Beer
Abundant Numbers
699
Christmas Trees
624
Collatz
873
Diamonds
317
Divisors
893
Fibonacci
928
Fizz Buzz
797829
Happy Numbers
389
Intersection
695
Kolakoski Sequence
647
Leap Years
671
Look and Say
528631
Niven Numbers (Long)
791
Ordinal Numbers
647
Pascal’s Triangle
641
Prime Numbers
661
Quine
930
Roman to Arabic
437
Seven Segment
642
Sierpiński Triangle
448
φ
192
√2
210