12 Days of Christmas
99 Bottles of Beer
Abundant Numbers
Arabic to Roman
brainfuck
Catalan Numbers
Catalan’s Constant
Christmas Trees
CSS Colors
601st
596th
619th
Cubes
235th
542nd
Diamonds
Divisors
Emirp Numbers
Emojify
208th
270th
167th
Evil Numbers
1,017th
188th
1,296th
Fibonacci
1,931st
999th
4,417th
4,585th
Fizz Buzz
5,300th
2,386th
6,324th
7,322nd
Foo Fizz Buzz Bar
Fractions
Happy Numbers
Intersection
331st
741st
Jacobi Symbol
Kolakoski Constant
Kolakoski Sequence
889th
827th
Leap Years
1,292nd
903rd
765th
Levenshtein Distance
509th
737th
327th
Leyland Numbers
Look and Say
Lucky Tickets
189th
438th
303rd
Morse Encoder
Niven Numbers
908th
1,180th
833rd
Niven Numbers (Long)
Odious Numbers
837th
163rd
1,021st
Ordinal Numbers
522nd
997th
793rd
Pangram Grep
Pascal’s Triangle
Pernicious Numbers
1,628th
1,435th
1,616th
Prime Numbers
Prime Numbers (Long)
1,109th
428th
Quine
Recamán
450th
540th
514th
Rock-paper-scissors-Spock-lizard
Roman to Arabic
Rule 110
Seven Segment
Sierpiński Triangle
Spelling Numbers
Sudoku
Tongue-twisters
United States
340th
342nd
263rd
Vampire Numbers
489th
563rd
597th
Van Eck Sequence
λ
602nd
446th
653rd
π
209th
418th
τ
208th
396th
φ
346th
446th
1,066th
√2
281st
448th
𝑒
641st
642nd
1,218th