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A200903 A182589(n)/8. 0
1, 3, 27, 297, 47709, 645435, 126324495, 1808414181, 382438918233, 1242372315626955, 18595508156138529, 63815763282950874195, 14742997800191813247975, 224916431556261219090813, 52678299544059483705751857, 191343486826902593656102628835 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..16.

CROSSREFS

Sequence in context: A127503 A214363 A204821 * A318108 A290576 A291315

Adjacent sequences:  A200900 A200901 A200902 * A200904 A200905 A200906

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Nov 23 2011

STATUS

approved

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Last modified November 18 04:44 EST 2019. Contains 329248 sequences. (Running on oeis4.)