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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
OFFSET
3,2
CROSSREFS
Sequence in context: A264376 A328955 A098921 * A081574 A084151 A346396
KEYWORD
nonn
EXTENSIONS
More terms from Sean A. Irvine, Oct 24 2019
STATUS
approved