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A027997 Sum{T(n,k)*T(n,k+3)}, 0<=k<=2n-3, T given by A027926. 0
16, 70, 292, 1197, 4864, 19656, 79124, 317592, 1271976, 5085730, 20307396, 81003583, 322847552, 1285900570, 5119076236, 20370229878, 81032093192, 322258628220, 1281334227276, 5093898416278, 20248096412336, 80478051058480 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,1

LINKS

Table of n, a(n) for n=3..24.

CROSSREFS

Sequence in context: A036660 A063493 A220212 * A284844 A258724 A264888

Adjacent sequences:  A027994 A027995 A027996 * A027998 A027999 A028000

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified February 19 11:04 EST 2018. Contains 299330 sequences. (Running on oeis4.)