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A027141 a(n) = Sum{T(n,k)*T(n,k+1)}, 0<=k<=2n-1, T given by A027113. 0
3, 23, 165, 1218, 9247, 71688, 564759, 4506005, 36324407, 295341956, 2418783687, 19932773439, 165151576215, 1374850036253, 11493442158373, 96443092570534 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..16.

CROSSREFS

Sequence in context: A037670 A037796 A212395 * A002398 A110065 A002816

Adjacent sequences:  A027138 A027139 A027140 * A027142 A027143 A027144

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified June 20 00:47 EDT 2019. Contains 324223 sequences. (Running on oeis4.)