id:A052459 - OEIS Search Results

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a(n) = n*(2*n^2+1)*(n^2+1)/6.

+0
4

1, 15, 95, 374, 1105, 2701, 5775, 11180, 20049, 33835, 54351, 83810, 124865, 180649, 254815, 351576, 475745, 632775, 828799, 1070670, 1366001, 1723205, 2151535, 2661124, 3263025, 3969251, 4792815, 5747770, 6849249, 8113505 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`2-magic series constant.`
	LINKS	`Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.`
	CROSSREFS	`Cf. A052460, A052461.` `Sequence in context: A125325 A126483 A114240 this_sequence A044266 A044647 A159528` `Adjacent sequences: A052456 A052457 A052458 this_sequence A052460 A052461 A052462`
	KEYWORD	`nonn,easy`
	AUTHOR	`Eric Weisstein (eric(AT)weisstein.com)`
	EXTENSIONS	`Formula from Vladeta Jovovic (vladeta(AT)eunet.rs), Jun 15 2002`

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.

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