12 Days of Christmas
775883
99 Bottles of Beer
826
Abundant Numbers
784
Christmas Trees
627
Collatz
878
Diamonds
380
Divisors
892
Fibonacci
926
Fizz Buzz
873834
Happy Numbers
502
Intersection
692
Kolakoski Sequence
643
Leap Years
756
Look and Say
648629
Niven Numbers (Long)
794
Ordinal Numbers
670
Pascal’s Triangle
639
Prime Numbers
841
Quine
930
Roman to Arabic
440
Seven Segment
669
Sierpiński Triangle
407
φ
192
√2
211