A027259 - OEIS

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A027259

a(n) = Sum{T(n,k)*T(n,k+2)}, 0<=k<=2n-2, T given by A025177.

5, 40, 342, 2941, 25333, 218659, 1891683, 16403283, 142548639, 1241293314, 10829045472, 94632148659, 828235716571 (list; graph; refs; listen; history; internal format)

	OFFSET	`2,1`
	CROSSREFS	`Sequence in context: A123943 A067412 A078846 * A007036 A052798 A137973` `Adjacent sequences: A027256 A027257 A027258 * A027260 A027261 A027262`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified February 17 14:50 EST 2012. Contains 206050 sequences.