A321207 a(n) = (n*n!)^3.

1, 64, 5832, 884736, 216000000, 80621568000, 43912253952000, 33560740233216000, 34835065137266688000, 47784725839872000000000, 84653556693609480192000000, 189912972073787235237888000000, 530482432188949589775089664000000, 1818063982946861510421834104832000000

Offset

1,2

Links

Table of n, a(n) for n=1..14.

Formula

a(n) = (A001563(n))^3.

Maple

seq((n*(n)!)^3, n=1..20) ;

Prog

(PARI) a(n)=(n*n!)^3 \\ Charles R Greathouse IV, Oct 30 2018

Crossrefs

Cf. A001563, A176128.

Sequence in context: A300810 A301449 A265616 * A281954 A316182 A305768

Adjacent sequences: A321204 A321205 A321206 * A321208 A321209 A321210

Keyword

nonn,easy

Author

Peter Szmodics, Oct 30 2018

Extensions

a(9)-a(14) corrected by Georg Fischer, May 08 2021

Status

approved