A072529 Product of the next n multiples of n.

1, 24, 3240, 1290240, 1126125000, 1822853652480, 4914543582748800, 20469829379869900800, 124583146969045247683200, 1061374990515840000000000000, 12232437772393129356474535526400

Offset

1,2

Links

Table of n, a(n) for n=1..11.

Formula

a(n) = n^n * (n*(n+1)/2)! / (n*(n-1)/2)!. - Lior Manor, Aug 19 2002

Example

a(4) = 10*4 * 9*4 * 8*4 * 7*4 = 1290240.

Prog

(PARI) a(n) = n^n * (n*(n+1)/2)! / (n*(n-1)/2)!; \\ Michel Marcus, Apr 16 2025

Crossrefs

a(n) = A057003(n) * n^n.

Sequence in context: A272179 A088731 A299697 * A349115 A159681 A275569

Adjacent sequences: A072526 A072527 A072528 * A072530 A072531 A072532

Keyword

nonn

Author

Amarnath Murthy, Aug 01 2002

Extensions

More terms from Lior Manor Aug 19 2002

Status

approved