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Search: id:A027259
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A027259 a(n) = Sum{T(n,k)*T(n,k+2)}, 0<=k<=2n-2, T given by A025177. +0
1
5, 40, 342, 2941, 25333, 218659, 1891683, 16403283, 142548639, 1241293314, 10829045472, 94632148659, 828235716571 (list; graph; listen)
OFFSET

2,1
CROSSREFS

Sequence in context: A123943 A067412 A078846 this_sequence A007036 A052798 A137973

Adjacent sequences: A027256 A027257 A027258 this_sequence A027260 A027261 A027262

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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