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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 * 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

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Last modified May 17 15:26 EDT 2024. Contains 372603 sequences. (Running on oeis4.)