12 Days of Christmas
99 Bottles of Beer
Abundant Numbers
Arabic to Roman
brainfuck
Catalan Numbers
Catalan’s Constant
Christmas Trees
CSS Colors
615th612th634th
Cubes
243rd555th
Diamonds
Divisors
Emirp Numbers
Emojify
209th273rd165th
Evil Numbers
1,012th191st1,372nd
Fibonacci
1,961st1,024th4,491st4,656th
Fizz Buzz
5,356th2,416th6,394th7,398th
Foo Fizz Buzz Bar
Fractions
Happy Numbers
Intersection
340th759th
Jacobi Symbol
Kolakoski Constant
Kolakoski Sequence
901st838th
Leap Years
1,299th904th768th
Levenshtein Distance
515th750th330th
Leyland Numbers
Look and Say
Lucky Tickets
195th451st311th
Morse Encoder
Niven Numbers
914th1,190th838th
Niven Numbers (Long)
Odious Numbers
865th166th1,020th
Ordinal Numbers
533rd1,018th813th
Pangram Grep
Pascal’s Triangle
Pernicious Numbers
1,636th1,436th1,626th
Prime Numbers
Prime Numbers (Long)
1,129th434th
Quine
Recamán
464th557th532nd
Rock-paper-scissors-Spock-lizard
Roman to Arabic
Rule 110
Seven Segment
Sierpiński Triangle
Spelling Numbers
Sudoku
Tongue-twisters
United States
347th349th267th
Vampire Numbers
498th572nd606th
Van Eck Sequence
λ
610th450th661st
π
214th425th
τ
214th401st
φ
348th450th1,082nd
√2
287th452nd
𝑒
653rd654th1,237th