12 Days of Christmas
334
99 Bottles of Beer
268
Abundant Numbers
668
Arrows
320
Christmas Trees
382
Diamonds
273
Divisors
699
Emirp Numbers
439
Evil Numbers
785
Fibonacci
934
Fizz Buzz
578
Happy Numbers
325
Intersection
211
Leap Years
730
Leyland Numbers
549
Niven Numbers
591
Odious Numbers
783
Pangram Grep
698
Pascal’s Triangle
435
Pernicious Numbers
686
Prime Numbers
713
Seven Segment
266
Sierpiński Triangle
131
π
249
τ
241
φ
500
𝑒
498