id:A026534 - OEIS Search Results

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a(n) = Sum{T(i,j)}, 0<=j<=i, 0<=i<=2n, T given by A026519.

+0
4

1, 4, 10, 28, 64, 172, 388, 1036, 2332, 6220, 13996, 37324, 83980, 223948, 503884, 1343692, 3023308, 8062156, 18139852, 48372940, 108839116, 290237644, 653034700, 1741425868, 3918208204, 10448555212, 23509249228, 62691331276 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`G.f.: [x(1+3x)]/[(1-x)(1-6x^2)]. - Ralf Stephan, Feb 03 2004`
	CROSSREFS	`Cf. A026532, A026551.` `Sequence in context: A034920 A038579 A133726 this_sequence A111308 A121302 A026150` `Adjacent sequences: A026531 A026532 A026533 this_sequence A026535 A026536 A026537`
	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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