A081958 Diagonal of A081957.

2, 8, 36, 180, 1080, 7560, 60480, 524160, 5241600, 56609280, 670602240, 8622028800, 118879488000, 1793381990400, 28158588057600, 474249904128000, 8447576417280000, 159659194286592000, 3162772610629632000, 66117689869271040000, 1445143792856924160000

Offset

1,1

Links

James Rayman, Table of n, a(n) for n = 1..400

Prog

(Python) def a(n): return row(n)[-1] # row(n) is given in A081957. - James Rayman, Jan 17 2021

Crossrefs

Cf. A081957, A081959, A081960.

Sequence in context: A245102 A129148 A285672 * A369619 A316663 A243948

Adjacent sequences: A081955 A081956 A081957 * A081959 A081960 A081961

Keyword

nonn

Author

Amarnath Murthy, Apr 02 2003

Extensions

Corrected and extended by Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Apr 08 2003

a(11)-a(19) from James Rayman, Jan 16 2021

Corrected and extended by James Rayman, Jan 17 2021

Status

approved