12 Days of Christmas
573
99 Bottles of Beer
435
Abundant Numbers
713
Abundant Numbers (Long)
832
Catalan Numbers
520
Catalan’s Constant
69
Christmas Trees
589
Collatz
699
Diamonds
362
Divisors
900
Emirp Numbers
564
Emirp Numbers (Long)
627
Evil Numbers
754
Evil Numbers (Long)
738
Fibonacci
886
Fizz Buzz
624
Foo Fizz Buzz Bar
622
Leap Years
813
Niven Numbers
740
Niven Numbers (Long)
805
Odious Numbers
781
Odious Numbers (Long)
778
Ordinal Numbers
643
Pernicious Numbers
309
Prime Numbers
585
Prime Numbers (Long)
619
λ
146
π
63
τ
62
φ
51
√2
47
𝑒
46