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A026973
a(n) = Sum_{k=0..n-2} T(n,k) * T(n,k+2), with T given by A026648.
0
1, 8, 52, 224, 1131, 4620, 23456, 92752, 460170, 1805760, 8946216, 34942176, 172593267, 673129380, 3323413216, 12954246368, 63944790462, 249263001360, 1230668687000, 4798770328960, 23700302314238, 92457112946968, 456814709763456, 1782991313610720, 8813232700137268
OFFSET
2,2
CROSSREFS
Sequence in context: A024179 A302816 A026963 * A244718 A303509 A107584
KEYWORD
nonn
EXTENSIONS
More terms from Sean A. Irvine, Oct 20 2019
STATUS
approved