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A027234 a(n) = Sum_{k=0..n-3} T(n,k) * T(n,k+3), with T given by A026758. 0
1, 9, 62, 320, 1837, 8376, 45666, 198471, 1065418, 4523403, 24247545, 101589616, 547233490, 2273356598, 12341618508, 50963502172, 279167141052, 1147495086055, 6344204700832, 25979651242434, 144938080884808, 591635283209270, 3328970814605391, 13551109648829458, 76853618775913752 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,2

LINKS

Table of n, a(n) for n=3..27.

CROSSREFS

Sequence in context: A264376 A328955 A098921 * A081574 A084151 A346396

Adjacent sequences:  A027231 A027232 A027233 * A027235 A027236 A027237

KEYWORD

nonn

AUTHOR

Clark Kimberling

EXTENSIONS

More terms from Sean A. Irvine, Oct 24 2019

STATUS

approved

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Last modified September 23 04:45 EDT 2021. Contains 347609 sequences. (Running on oeis4.)