id:A047081 - OEIS Search Results

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Sum{T(n,i): i=0,1,...,n}, array T as in A047080.

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1, 2, 3, 6, 11, 20, 35, 62, 107, 188, 323, 566, 971, 1700, 2915, 5102, 8747, 15308, 26243, 45926, 78731, 137780, 236195, 413342, 708587, 1240028, 2125763, 3720086, 6377291, 11160260, 19131875, 33480782, 57395627 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`G.f.: (2x^4-2x^2+x+1)/[(1-x)(1-3x^2)].`
	CROSSREFS	`Sequence in context: A038084 A018169 A131269 this_sequence A090167 A002985 A093608` `Adjacent sequences: A047078 A047079 A047080 this_sequence A047082 A047083 A047084`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

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