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A181179 a(1)=1; for n>=2, a(n) = 2*a(n-1)!. 0
1, 2, 4, 48, 24827831185072145341724578094746750077042972709355520000000000 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
MATHEMATICA
NestList[2#!&, 1, 4] (* Harvey P. Dale, Aug 29 2015 *)
CROSSREFS
Sequence in context: A097424 A228596 A032019 * A175814 A303382 A303443
KEYWORD
nonn
AUTHOR
H Gee (harry987(AT)live.com.au), Oct 08 2010
EXTENSIONS
Corrected by Harvey P. Dale, Aug 29 2015
Definition changed by Georg Fischer, Jun 16 2021
STATUS
approved

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Last modified March 1 06:29 EST 2024. Contains 370430 sequences. (Running on oeis4.)