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A026983
a(n) = Sum_{k=0..n-2} T(n,k) * T(n,k+2), with T given by A026670.
0
1, 8, 47, 224, 1130, 4868, 23404, 97230, 457264, 1868456, 8679894, 35162196, 162087345, 653396608, 2996092939, 12041970574, 55006554003, 220673343660, 1005105011265, 4027407386110, 18302390130349, 73278803406040, 332412585527847, 1330205838019114, 6025308727310905
OFFSET
2,2
CROSSREFS
Sequence in context: A085299 A160640 A230622 * A296331 A081279 A099110
KEYWORD
nonn
EXTENSIONS
More terms from Sean A. Irvine, Oct 20 2019
STATUS
approved