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A026953 a(n) = Sum{T(n,k)*T(n,k+2)}, 0<=k<=n-2, T given by A026386. 0
1, 8, 41, 272, 1168, 7428, 30302, 189808, 759101, 4724160, 18728841, 116207424, 458829051, 2842936320, 11203933255, 69378730880, 273211969075 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,2

LINKS

Table of n, a(n) for n=2..18.

CROSSREFS

Sequence in context: A209841 A196927 A188209 * A280068 A304466 A228480

Adjacent sequences:  A026950 A026951 A026952 * A026954 A026955 A026956

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified September 17 13:00 EDT 2019. Contains 327131 sequences. (Running on oeis4.)