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A026958 a(n) = Sum{T(n,k)*T(n,k+2)}, 0<=k<=n-2, T given by A026615. 0
1, 10, 69, 340, 1476, 6074, 24419, 97136, 384428, 1517422, 5981070, 23556746, 92743296, 365078146, 1437124303, 5657887016, 22279053380, 87749051950, 345704345066 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,2

LINKS

Table of n, a(n) for n=2..20.

CROSSREFS

Sequence in context: A081656 A219466 A321060 * A026988 A081280 A038806

Adjacent sequences:  A026955 A026956 A026957 * A026959 A026960 A026961

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified April 24 16:16 EDT 2019. Contains 322430 sequences. (Running on oeis4.)