12 Days of Christmas
825
99 Bottles of Beer
650
Abundant Numbers
703
565
695
699
449
Christmas Trees
721
Diamonds
374
Divisors
740
1,000
Emirp Numbers
523
Evil Numbers
690
Fibonacci
523
900
Fizz Buzz
699
Happy Numbers
660
Morse Encoder
458
Niven Numbers
721
Odious Numbers
690
Pascalβs Triangle
675
Pernicious Numbers
635
Prime Numbers
541
Quine
816
Rock-paper-scissors-Spock-lizard
662
United States
282
Ξ»
162