A010797 a(n) = n! * (n+1)! * (n+2)! / (2! * 3!).

1, 24, 1440, 172800, 36288000, 12192768000, 6145155072000, 4424511651840000, 4380266535321600000, 5781951826624512000000, 9921829334487662592000000, 21669275266521055100928000000

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn
• easy

Links

• Seiichi Manyama, Table of n, a(n) for n = 1..180
• Index entries for sequences related to factorial numbers

Crossrefs

Column 3 in triangle A009963.

Programs

Mathematica

Times@@@Partition[Range[15]!,3,1]/(2!3!) (* Harvey P. Dale, Aug 06 2022 *)

Extensions

Offset changed to 1 by Seiichi Manyama, Aug 14 2023