id:A025270 - 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, 2, 1, 1, 6, 17, 60, 201, 688, 2370, 8218, 28703, 100846, 356370, 1265918, 4518571, 16200070, 58317298, 210718174, 764015412, 2778955460, 10137598506, 37082361204, 135985402371, 499840932062, 1841260760276, 6796395432602, 25134116857096 (list; graph; listen)

	OFFSET	`1,2`
	CROSSREFS	`Sequence in context: A039763 A094262 A123554 this_sequence A144510 A143670 A005450` `Adjacent sequences: A025267 A025268 A025269 this_sequence A025271 A025272 A025273`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

AT&T Labs Research