12 Days of Christmas
490
99 Bottles of Beer
619
Abundant Numbers
708
Arabic to Roman
538
Christmas Trees
561
CSS Colors
51
Cubes
607
Diamonds
669
Divisors
888
Emirp Numbers
330
Evil Numbers
596
Fibonacci
1,000
Fizz Buzz
881
Happy Numbers
463
Kolakoski Sequence
461
Leap Years
877
Look and Say
552
Niven Numbers
935
Odious Numbers
596
Ordinal Numbers
702
Pangram Grep
673
Pernicious Numbers
604
Prime Numbers
707
Quine
1,000
Recamán
657
Rule 110
533
Seven Segment
298
Spelling Numbers
599
Tongue-twisters
421
United States
150
Vampire Numbers
113
Van Eck Sequence
669
π
1055925785739223
τ
10461
224
φ
95
188
√2
89
227
𝑒
93
177