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A026978 a(n) = Sum_{k=0..n-2} T(n,k) * T(n,k+2), with T given by A026659. 0
1, 8, 41, 208, 856, 4540, 18527, 86896, 343976, 1794146, 7114521, 33019048, 129946039, 674164700, 2656947487, 12352433072, 48571744683, 251186392774, 988685996629, 4614598284024, 18151637670487, 93662525206528, 368685987098199, 1727749480803800, 6800520785920773 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,2

LINKS

Table of n, a(n) for n=2..26.

CROSSREFS

Sequence in context: A199846 A188180 A026968 * A037577 A265149 A209822

Adjacent sequences:  A026975 A026976 A026977 * A026979 A026980 A026981

KEYWORD

nonn

AUTHOR

Clark Kimberling

EXTENSIONS

More terms from Sean A. Irvine, Oct 20 2019

STATUS

approved

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Last modified June 30 02:41 EDT 2022. Contains 354913 sequences. (Running on oeis4.)