12 Days of Christmas
99 Bottles of Beer
Abundant Numbers
Abundant Numbers (Long)
Arithmetic Numbers
Arrows
Ascending Primes
Catalan Numbers
Christmas Trees
Collatz
Day of Week
Divisors
Emirp Numbers
Emirp Numbers (Long)
Emojify
Evil Numbers
Evil Numbers (Long)
Fibonacci
12
181
100
110
238
41
563
944
863
234
234
727
135
768
818
266
196
187
88
73
629
77
165
60
563
887
943
161
58
80
878
633
302
251
82
708
458
225
818
549
889
Fizz Buzz
Foo Fizz Buzz Bar
Fractions
Game of Life
Happy Numbers
Happy Numbers (Long)
ISBN
Leap Years
Leyland Numbers
ln 2
Lucky Numbers
Musical Chords
Niven Numbers
Niven Numbers (Long)
Odious Numbers
Odious Numbers (Long)
Pernicious Numbers
Pernicious Numbers (Long)
Prime Numbers
Prime Numbers (Long)
Quine
United States
Vampire Numbers
Van Eck Sequence
γ
λ
π
τ
φ
√2
𝑒