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A274304 A bisection of A002866. 1
1, 4, 192, 23040, 5160960, 1857945600, 980995276800, 714164561510400, 685597979049984000, 839171926357180416000, 1275541328062914232320000, 2357200374260265501327360000, 5204698426366666226930810880000, 13532215908553332190020108288000000 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
CROSSREFS
Sequence in context: A163839 A012015 A012102 * A299999 A007341 A203516
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jun 20 2016
STATUS
approved

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Last modified April 25 05:18 EDT 2024. Contains 371964 sequences. (Running on oeis4.)