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A026949
a(n) = Sum_{k=0..n-3} T(n,k) * T(n,k+3), with T given by A026374.
0
1, 12, 83, 630, 3171, 21672, 97482, 639180, 2730615, 17543196, 72932904, 463291920, 1895949055, 11961944400, 48478715240, 304543085040, 1226501910315, 7682898791700, 30811853728475, 192632866196694, 770315837004637, 4809438625979592, 19193549752057758, 119719958370912900
OFFSET
3,2
CROSSREFS
Cf. A026374.
Sequence in context: A252179 A102105 A275743 * A165127 A213347 A075476
KEYWORD
nonn
EXTENSIONS
More terms from Sean A. Irvine, Oct 17 2019
STATUS
approved