12 Days of Christmas
357605
99 Bottles of Beer
Abundant Numbers
699
Christmas Trees
624
Collatz
874
Diamonds
317
Divisors
893
Fibonacci
928
Fizz Buzz
797829
Happy Numbers
389
Intersection
697
Kolakoski Sequence
648
Leap Years
672
Look and Say
528633
Niven Numbers (Long)
792
Ordinal Numbers
655
Pascal’s Triangle
642
Prime Numbers
661
Quine
931
Roman to Arabic
438
Seven Segment
643
Sierpiński Triangle
448
φ
192
√2
211