Abundant Numbers
512
Abundant Numbers (Long)
513
Arithmetic Numbers
440
Card Number Validation
504
Catalan Numbers
447
Collatz
561
Divisors
592
Evil Numbers (Long)
498
Factorial Factorisation
290
Farey Sequence
452
Fibonacci
523
Fizz Buzz
541
Gijswijt’s Sequence
410
Happy Numbers
452
Happy Numbers (Long)
461
Intersection
605
Inventory Sequence
404
ISBN
457
Jacobi Symbol
342
Kaprekar Numbers
505
Kolakoski Sequence
383
Leap Years
455
Leyland Numbers
272
N Queens
424
Niven Numbers
781
Niven Numbers (Long)
834
Odious Numbers
601
Ordinal Numbers
528
Pangram Grep
593
Pascal’s Triangle
286
Pernicious Numbers
346
Prime Numbers
553
Prime Numbers (Long)
605
Recamán
559
Reverse Polish Notation
378
Roman to Arabic
400
Rule 110
294
SI Units
461
√2
212