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A026684 T(2n,n-2), T given by A026681. 0
1, 11, 50, 352, 1412, 9012, 35218, 216556, 841161, 5080487, 19727183, 117977884, 458783666, 2727417052, 10627866041, 62938875136, 245774605829, 1451708319833, 5680430498730, 33491080099092, 131295252750566, 773074959646212 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,2

LINKS

Table of n, a(n) for n=2..23.

CROSSREFS

Sequence in context: A167423 A026618 A266034 * A181619 A067983 A175360

Adjacent sequences:  A026681 A026682 A026683 * A026685 A026686 A026687

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified May 9 00:09 EDT 2021. Contains 343685 sequences. (Running on oeis4.)