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A027209 Sum{T(n,k)*T(n,k+2), 0<=k<=n-2, T given by A026725. +0
1
1, 7, 34, 173, 741, 3549, 14670, 68683, 279715, 1294598, 5233060, 24052965, 96822587, 442972139, 1778697948, 8110611295, 32516501991, 147897243768, 592346459071 (list; graph; listen)
OFFSET

2,2
CROSSREFS

Sequence in context: A032206 A124466 A055271 this_sequence A080048 A027233 A117650

Adjacent sequences: A027206 A027207 A027208 this_sequence A027210 A027211 A027212

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified December 3 22:15 EST 2009. Contains 170310 sequences.

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