### 12 Days of Christmas

### 99 Bottles of Beer

### Abundant Numbers

131^{st}22

^{nd}

### Arabic to Roman

### brainfuck

14^{th}

### Christmas Trees

### CSS Colors

### Cubes

### Diamonds

25^{th}

### Divisors

174^{th}

### Emirp Numbers

### Emojify

### Evil Numbers

92^{nd}42

^{nd}

### Fibonacci

1^{st}31

^{st}49

^{th}

### Fizz Buzz

4^{th}3

^{rd}14

^{th}48

^{th}5

^{th}10

^{th}12

^{th}17

^{th}24

^{th}3

^{rd}16

^{th}1

^{st}1

^{st}10

^{th}1

^{st}10

^{th}25

^{th}38

^{th}114

^{th}36

^{th}13

^{th}35

^{th}15

^{th}17

^{th}16

^{th}19

^{th}14

^{th}26

^{th}

### Happy Numbers

103^{rd}

### Intersection

### Leap Years

2^{nd}128

^{th}179

^{th}

### Levenshtein Distance

### Leyland Numbers

### Look and Say

### Lucky Tickets

### Morse Decoder

### Morse Encoder

### Niven Numbers

### Odious Numbers

122^{nd}

### Ordinal Numbers

### Pangram Grep

### Pascal’s Triangle

42^{nd}10

^{th}

### Pernicious Numbers

### Poker

### Prime Numbers

4^{th}34

^{th}

### Quine

24^{th}7

^{th}

### Recamán

### Rock-paper-scissors-Spock-lizard

### Roman to Arabic

### Rule 110

### Seven Segment

### Sierpiński Triangle

### Spelling Numbers

### Sudoku

### Ten-pin Bowling

### Tongue-twisters

### United States

26^{th}

### Vampire Numbers

5^{th}4

^{th}

### λ

43^{rd}

### π

36^{th}24

^{th}

### τ

29^{th}

### φ

55^{th}

### √2

32^{nd}12

^{th}

### 𝑒

78^{th}19

^{th}