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A081958 Diagonal of A081957. 4
2, 8, 36, 180, 1080, 7560, 60480, 524160, 5241600, 56609280, 670602240, 8622028800, 118879488000, 1793381990400, 28158588057600, 474249904128000, 8447576417280000, 159659194286592000, 3162772610629632000, 66117689869271040000, 1445143792856924160000 (list; graph; refs; listen; history; text; internal format)
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 * A316663 A243948 A001540

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

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Last modified November 29 07:48 EST 2021. Contains 349416 sequences. (Running on oeis4.)