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Search: id:A027330
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A027330 a(n) = Sum{T(n,k)*T(n,k+1)}, 0<=k<=m, where m=0 for n=1; m=n+1 for n >= 2; T given by A026148. +0
1
1, 6, 50, 394, 3120, 24922, 200676, 1627434, 13282008, 109014050, 899304906, 7452793766, 62019712684, 518052932358 (list; graph; listen)
OFFSET

1,2

CROSSREFS

Sequence in context: A035290 A138422 A001303 this_sequence A090409 A039742 A125558

Adjacent sequences: A027327 A027328 A027329 this_sequence A027331 A027332 A027333

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified November 27 14:50 EST 2009. Contains 167570 sequences.


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