id:A163832 - OEIS Search Results

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a(n) = n*(2*n^2+5*n+1).

+0
2

0, 8, 38, 102, 212, 380, 618, 938, 1352, 1872, 2510, 3278, 4188, 5252, 6482, 7890, 9488, 11288, 13302, 15542, 18020, 20748, 23738, 27002, 30552, 34400, 38558, 43038, 47852, 53012, 58530, 64418, 70688, 77352, 84422, 91910, 99828, 108188, 117002 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`Row sums of triangle A155156.`
	FORMULA	`a(n) = A163683(n)+n = A163815(n)-2n = 2A162254(n).` `a(n) = 4a(n-1)-6a(n-2)+4a(n-3)-a(n-4). G.f.: -2x(1+x)*(x-4)/(x-1)^4.`
	CROSSREFS	`Cf. A155156.` `Sequence in context: A035038 A111645 A128246 this_sequence A139798 A065762 A034009` `Adjacent sequences: A163829 A163830 A163831 this_sequence A163833 A163834 A163835`
	KEYWORD	`nonn,easy`
	AUTHOR	`Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Aug 05 2009`
	EXTENSIONS	`Edited by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Aug 05 2009`

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

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