id:A024945 - OEIS Search Results

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a(n) = Sum(a(2i-1)*a(n-2i+1), i = 1,2,...,[ (n+2)/4 ]).

+0
2

1, 1, 2, 2, 2, 6, 10, 14, 26, 50, 90, 162, 290, 622, 1186, 2206, 4274, 8802, 17378, 33538, 65986, 136790, 274282, 540686, 1082698, 2238978, 4537082, 9091330, 18322466, 38230558, 78041890, 157766622, 321334306, 670282690, 1377130434, 2806589186 (list; graph; listen)

	OFFSET	`4,3`
	CROSSREFS	`Sequence in context: A087482 A137227 A052537 this_sequence A032306 A058756 A007039` `Adjacent sequences: A024942 A024943 A024944 this_sequence A024946 A024947 A024948`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified September 5 19:27 EDT 2008. Contains 143485 sequences.

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