A010798 a(n) = n! * (n+1)! * (n+2)! * (n+3)! / (2! * 3! * 4!).

1, 120, 43200, 36288000, 60963840000, 184354652160000, 929147446886400000, 7358847779340288000000, 87423111618562621440000000, 1500180595374534583910400000000, 36040338623277818843863449600000000

Offset

1,2

Links

Seiichi Manyama, Table of n, a(n) for n = 1..142

Index entries for sequences related to factorial numbers

Mathematica

#/(2!3!4!)&/@Times@@@Partition[Range[20]!, 4, 1] (* Harvey P. Dale, Jul 29 2022 *)

Crossrefs

Column 4 in triangle A009963.

Sequence in context: A230729 A027493 A145407 * A283829 A275457 A265873

Adjacent sequences: A010795 A010796 A010797 * A010799 A010800 A010801

Keyword

nonn,easy

Author

N. J. A. Sloane

Extensions

Offset changed to 1 by Seiichi Manyama, Aug 14 2023

Status

approved