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A026897 T(2n,n+4), T given by A026780. 0
1, 11, 80, 489, 2732, 14512, 74888, 380329, 1916709, 9637687, 48528434, 245289395, 1246499970, 6374296278, 32816505566, 170106486358, 887697088316, 4662338571684, 24636365887246, 130918389450108, 699335986465354 (list; graph; refs; listen; history; text; internal format)
OFFSET

4,2

LINKS

Table of n, a(n) for n=4..24.

CROSSREFS

Sequence in context: A126506 A159663 A227244 * A021024 A127021 A326243

Adjacent sequences:  A026894 A026895 A026896 * A026898 A026899 A026900

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified September 23 04:19 EDT 2021. Contains 347609 sequences. (Running on oeis4.)