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A026984
a(n) = Sum_{k=0..n-3} T(n,k) * T(n,k+3), with T given by A026670.
0
1, 10, 68, 394, 2011, 10258, 47327, 229186, 1007891, 4752128, 20351196, 94455408, 398021603, 1828645056, 7624936963, 34786976248, 144011195937, 653694082256, 2692363924059, 12174658758744, 49956496140401, 225233631148500, 921619221445645, 4145493852959640, 16926389947869331
OFFSET
3,2
CROSSREFS
Sequence in context: A144052 A280438 A192021 * A104598 A026901 A027242
KEYWORD
nonn
EXTENSIONS
More terms from Sean A. Irvine, Oct 20 2019
STATUS
approved