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A112362 A006967(n)/2. 0
1, 2, 2, 4, 12, 16, 20, 60, 148, 324, 664, 1600, 4956, 12796, 27960, 71596, 255348, 725648, 1748672 (list; graph; refs; listen; history; text; internal format)
OFFSET
2,2
LINKS
Table of n, a(n) for n=2..20.
CROSSREFS
Sequence in context: A134435 A136718 A362709 * A134720 A019225 A002840
Adjacent sequences: A112359 A112360 A112361 * A112363 A112364 A112365
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Dec 02 2005
STATUS
approved

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Last modified June 6 19:21 EDT 2024. Contains 373134 sequences. (Running on oeis4.)