A081529 Duplicate of A002944.

1, 1, 2, 3, 12, 10, 60, 105, 280, 252, 2520, 2310, 27720, 25740, 24024, 45045, 720720, 680680, 12252240, 11639628, 11085360, 10581480, 232792560, 223092870, 1070845776, 1029659400, 2974571600, 2868336900

Offset: 1

Author

Keywords

• dead

Crossrefs

Cf. A003418.

Formula

Equals A003418(n) / n - Martin Fuller, Jan 03 2006

Extensions

More terms from Martin Fuller, Jan 03 2006