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A026717 T(2n,n-2), T given by A026714. 0
1, 9, 59, 346, 1931, 10513, 56478, 301128, 1598424, 8461783, 44720274, 236094725, 1245579365, 6568448233, 34627898410, 182517293169, 961887614156, 5068804722664, 26709150033769, 140733080850141, 741514434266253 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,2

LINKS

Table of n, a(n) for n=2..22.

CROSSREFS

Sequence in context: A280103 A174654 A027249 * A231228 A198847 A059356

Adjacent sequences:  A026714 A026715 A026716 * A026718 A026719 A026720

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified January 28 13:27 EST 2020. Contains 331321 sequences. (Running on oeis4.)