Abundant Numbers
545
Abundant Numbers (Long)
552
Arithmetic Numbers
480
Card Number Validation
569
Catalan Numbers
482
Collatz
600
Divisors
639
Evil Numbers (Long)
556
Factorial Factorisation
317
Farey Sequence
486
Fibonacci
549
Fizz Buzz
563
Gijswijt’s Sequence
459
Happy Numbers
490
Happy Numbers (Long)
505
Intersection
683
Inventory Sequence
450
ISBN
504
Jacobi Symbol
372
Kaprekar Numbers
561
Kolakoski Sequence
422
Leap Years
522
Leyland Numbers
296
N Queens
468
Niven Numbers
841
Niven Numbers (Long)
911
Odious Numbers
647
Ordinal Numbers
582
Pangram Grep
652
Pascal’s Triangle
312
Pernicious Numbers
371
Prime Numbers
588
Prime Numbers (Long)
654
Recamán
611
Reverse Polish Notation
438
Roman to Arabic
440
Rule 110
320
SI Units
497
√2
225