12 Days of Christmas
820
99 Bottles of Beer
646
Abundant Numbers
656
551
663
688
432
Christmas Trees
709
Diamonds
367
Divisors
710
984
Emirp Numbers
512
Evil Numbers
677
Fibonacci
497
888
Fizz Buzz
694
Happy Numbers
646
Morse Encoder
447
Niven Numbers
709
Odious Numbers
675
Pascalβs Triangle
657
Pernicious Numbers
620
Prime Numbers
530
Quine
796
Rock-paper-scissors-Spock-lizard
653
United States
276
Ξ»
159