id:A026997 - OEIS Search Results

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a(n) = Sum{T(n,k)*T(n,k+1)}, 0<=k<=n-1, T given by A026703.

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1, 6, 35, 168, 926, 4294, 23224, 106690, 571926, 2617886, 13965688, 63815684, 339452265, 1549699466, 8228066295, 37543939462, 199095075169, 908167940082 (list; graph; listen)

	OFFSET	`1,2`
	CROSSREFS	`Adjacent sequences: A026994 A026995 A026996 this_sequence A026998 A026999 A027000` `Sequence in context: A026957 A026987 A030532 this_sequence A014337 A002041 A103995`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified October 11 13:47 EDT 2008. Contains 144830 sequences.

AT&T Labs Research