12 Days of Christmas
99 Bottles of Beer
Abundant Numbers
Christmas Trees
Cubes
Diamonds
1,458th
Divisors
Emirp Numbers
Evil Numbers
3,275th
Fibonacci
2,600th
Fizz Buzz
10,891st
Happy Numbers
Happy Numbers (Long)
Kolakoski Constant
Kolakoski Sequence
538th
Leap Years
Leyland Numbers
Morse Decoder
Niven Numbers
Odious Numbers
Pangram Grep
Pernicious Numbers
Prime Numbers
3,376th
Quine
1st
RecamΓ‘n
Rule 110
Smith Numbers
Star Wars Opening Crawl
Sudoku (Fill-in)
Vampire Numbers
Van Eck Sequence
Ξ»
Ο
3,251st2,288th3,371st2,205th2,269th1,305th3,131st2,723rd2,686th2,342nd1,733rd2,670th3,364th3,345th1,609th2,766th3,270th2,135th1,807th3,333rd2,566th3,024th1,116th3,230th3,188th1,688th1,366th1,759th2,029th1,664th
Ο
Ο
β2
π