Abundant Numbers
527
Abundant Numbers (Long)
532
Arithmetic Numbers
454
Card Number Validation
514
Catalan Numbers
452
Collatz
574
Divisors
609
Evil Numbers (Long)
518
Factorial Factorisation
295
Farey Sequence
449
Fibonacci
528
Fizz Buzz
549
Gijswijt’s Sequence
421
Happy Numbers
463
Happy Numbers (Long)
475
Intersection
618
Inventory Sequence
411
ISBN
470
Jacobi Symbol
341
Kaprekar Numbers
533
Kolakoski Sequence
384
Leap Years
502
Leyland Numbers
282
N Queens
438
Niven Numbers
806
Niven Numbers (Long)
866
Odious Numbers
608
Ordinal Numbers
537
Pangram Grep
612
Pascal’s Triangle
289
Pernicious Numbers
349
Prime Numbers
553
Prime Numbers (Long)
610
Recamán
575
Reverse Polish Notation
377
Roman to Arabic
410
Rule 110
304
SI Units
473
√2
219