Abundant Numbers
511
Abundant Numbers (Long)
512
Arithmetic Numbers
439
Card Number Validation
502
Catalan Numbers
446
Collatz
561
Divisors
591
Evil Numbers (Long)
511
Factorial Factorisation
289
Farey Sequence
450
Fibonacci
522
Fizz Buzz
540
Gijswijt’s Sequence
409
Happy Numbers
452
Happy Numbers (Long)
461
Intersection
603
Inventory Sequence
403
ISBN
457
Jacobi Symbol
341
Kaprekar Numbers
505
Kolakoski Sequence
382
Leap Years
455
Leyland Numbers
272
N Queens
423
Niven Numbers
781
Niven Numbers (Long)
833
Odious Numbers
600
Ordinal Numbers
528
Pangram Grep
593
Pascal’s Triangle
285
Pernicious Numbers
346
Prime Numbers
552
Prime Numbers (Long)
605
Recamán
559
Reverse Polish Notation
378
Roman to Arabic
400
Rule 110
294
SI Units
460
√2
212