12 Days of Christmas
787
99 Bottles of Beer
600
Abundant Numbers
734
Arabic to Roman
363
Christmas Trees
681
Diamonds
509
Divisors
900
Emirp Numbers
711
Evil Numbers
956
Fibonacci
958
Fizz Buzz
941828
Happy Numbers
581
Leap Years
783
Leyland Numbers
671
Lucky Tickets
525
Niven Numbers
795
Odious Numbers
781
Pangram Grep
861
Pascal’s Triangle
905
Pernicious Numbers
683
Prime Numbers
871
Quine
945
Roman to Arabic
397
Seven Segment
634
Sierpiński Triangle
473
Spelling Numbers
356
π
354
τ
329
φ
541
𝑒
370