12 Days of Christmas
275th
Abundant Numbers
365th
Christmas Trees
86th
Diamonds
498th
Divisors
1st
Emirp Numbers
240th
Evil Numbers
489th
Fibonacci
184th
Fizz Buzz
682nd
Happy Numbers
555th
Leap Years
422nd
Leyland Numbers
330th
Morse Decoder
125th
Morse Encoder
116th
Niven Numbers
73rd
Odious Numbers
297th
Ordinal Numbers
187th
Pangram Grep
59th
Pascal’s Triangle
1st
Pernicious Numbers
269th
Prime Numbers
474th
Recamán
176th
Rock-paper-scissors-Spock-lizard
81st
Seven Segment
150th
Sierpiński Triangle
62nd
φ
126th
√2
354th
𝑒
244th