id:A023869 - OEIS Search Results

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a(n) = s(1)t(n)+s(2)t(n-1)+...+s(k)t(n+1-k), where k=[ (n+1)/2 ], s = (natural numbers), t is A014306.

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0, 1, 3, 2, 4, 3, 6, 10, 15, 14, 19, 18, 24, 23, 30, 29, 37, 36, 45, 54, 64, 63, 74, 73, 85, 84, 97, 96, 110, 109, 124, 123, 139, 138, 154, 152, 169, 167, 185, 204, 224, 223, 244, 243, 265, 264, 287, 286, 310, 309, 334, 333, 359, 358, 385, 383, 410, 408, 436, 434, 463, 461, 491, 489 (list; graph; listen)

	OFFSET	`1,3`
	CROSSREFS	`Sequence in context: A141731 A024856 A147598 this_sequence A024596 A065375 A070961` `Adjacent sequences: A023866 A023867 A023868 this_sequence A023870 A023871 A023872`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research