Abundant Numbers
670
731
Abundant Numbers (Long)
809
Arabic to Roman
503
Arrows
548
brainfuck
648
Card Number Validation
632
Christmas Trees
675
CSS Colors
78
Cubes
482
Diamonds
418
Divisors
559857
Emirp Numbers
775
Emojify
360
Evil Numbers
800
Fibonacci
5471,000
Fizz Buzz
883
Forsyth–Edwards Notation
596
Gijswijt’s Sequence
520
Happy Numbers
381
ISBN
640
Kaprekar Numbers
652
Kolakoski Constant
558
Kolakoski Sequence
881
Leap Years
878
Morse Encoder
601
Niven Numbers
957
Odious Numbers
800
Ordinal Numbers
635
Pangram Grep
753
Pascal’s Triangle
667
Pernicious Numbers
816
Prime Numbers
645
Quine
969
Roman to Arabic
536
Seven Segment
458
Sierpiński Triangle
342
Spelling Numbers
224
Zeckendorf Representation
675
λ
238
π
453
φ
598
√2
1,000
𝑒
706