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A181179 a(0)=1; for n>0, a(n) = 2*a(n-1)!. 0
1, 2, 4, 48, 2482783118507214534172457809474675007704297270935552000000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..5.

CROSSREFS

Sequence in context: A143968 A097424 A032019 * A175814 A156498 A211169

Adjacent sequences:  A181176 A181177 A181178 * A181180 A181181 A181182

KEYWORD

nonn

AUTHOR

H Gee (harry987(AT)live.com.au), Oct 08 2010

STATUS

approved

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Last modified June 20 06:36 EDT 2013. Contains 226422 sequences.