12 Days of Christmas
772884
99 Bottles of Beer
Abundant Numbers
785
Christmas Trees
628
Collatz
880
Diamonds
380
Divisors
893
Fibonacci
928
Fizz Buzz
873835
Happy Numbers
502
Intersection
696
Kolakoski Sequence
647
Leap Years
673
Look and Say
649631
Niven Numbers (Long)
796
Ordinal Numbers
653
Pascal’s Triangle
641
Prime Numbers
841
Quine
930
Roman to Arabic
441
Seven Segment
671
Sierpiński Triangle
455
φ
193
√2
211