id:A027208 - OEIS Search Results

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a(n) = Sum{T(n,k)*T(n,k+1), 0<=k<=n-1, T given by A026725.

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1, 4, 19, 72, 338, 1289, 6027, 23117, 107746, 415058, 1929383, 7456777, 34584731, 134005510, 620344059, 2408498148, 11131638368, 43289074671, 199800878749, 778025282080 (list; graph; listen)

	OFFSET	`1,2`
	CROSSREFS	`Sequence in context: A000306 A100185 A129019 this_sequence A085348 A027232 A110688` `Adjacent sequences: A027205 A027206 A027207 this_sequence A027209 A027210 A027211`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.

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