99 Bottles of Beer
207th
Abundant Numbers
168th
Abundant Numbers (Long)
89th
Collatz
196th
CSS Colors
60th
Day of Week
111th
Divisors
150th
464th
1st
Evil Numbers
242nd
Happy Numbers
7th
Leap Years
85th35th48th44th37th65th93rd28th75th419th10th39th
Ordinal Numbers
1st
Pangram Grep
92nd
Pernicious Numbers
125th
Pernicious Numbers (Long)
99th
Quine
317th
606th
π
144th