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A026948 a(n) = Sum{T(n,k)*T(n,k+2)}, 0<=k<=n-2, T given by A026374. 0
1, 8, 58, 272, 1770, 7428, 46928, 189808, 1185645, 4724160, 29362806, 116207424, 720606705, 2842936320, 17610412600, 69378730880, 429579843435 (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: A002402 A015464 A144781 * A111585 A055839 A297097

Adjacent sequences:  A026945 A026946 A026947 * A026949 A026950 A026951

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified October 18 01:01 EDT 2018. Contains 316297 sequences. (Running on oeis4.)