12 Days of Christmas
804
99 Bottles of Beer
600
Abundant Numbers
732
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Christmas Trees
694
Diamonds
495
Divisors
799
Emirp Numbers
431
Evil Numbers
506
Fibonacci
704
Fizz Buzz
992
Happy Numbers
447
Leap Years
591
Niven Numbers
746
Odious Numbers
535
Pangram Grep
Pascal’s Triangle
352
Pernicious Numbers
416
Prime Numbers
555
Roman to Arabic
404
Seven Segment
467
Sierpiński Triangle
237
Spelling Numbers
λ
167
π
53
τ
59
φ
47
√2
50
𝑒
48