id:A025271 - OEIS Search Results

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a(n) = a(1)*a(n-1) + a(2)*a(n-2) + ...+ a(n-1)*a(1) for n >= 5.

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1, 1, 2, 1, 6, 18, 52, 165, 518, 1646, 5308, 17258, 56604, 187108, 622632, 2084461, 7016134, 23730006, 80610156, 274911614, 940915892, 3230919164, 11127525464, 38429281122, 133052559772, 461740643276, 1605877668824, 5596283069300 (list; graph; listen)

	OFFSET	`1,3`
	CROSSREFS	`Sequence in context: A025263 A097947 A101032 this_sequence A153804 A100404 A103114` `Adjacent sequences: A025268 A025269 A025270 this_sequence A025272 A025273 A025274`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

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