id:A084570 - OEIS Search Results

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Partial sums of A084263.

+0
3

1, 2, 6, 12, 23, 38, 60, 88, 125, 170, 226, 292, 371, 462, 568, 688, 825, 978, 1150, 1340, 1551, 1782, 2036, 2312, 2613, 2938, 3290, 3668, 4075, 4510, 4976, 5472, 6001, 6562, 7158, 7788, 8455, 9158, 9900, 10680, 11501, 12362, 13266, 14212, 15203, 16238 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`Partial sums give A084569.`
	FORMULA	`a(n)=(-1)^n/4 + (2n^3+6n^2+10n+ 9)/12; a(n)=sum{j=0..n, sum{i=0..j, i+(-1)^i }}.`
	CROSSREFS	`Adjacent sequences: A084567 A084568 A084569 this_sequence A084571 A084572 A084573` `Sequence in context: A131520 A086953 A101953 this_sequence A069956 A062476 A058868`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), May 31 2003`

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Last modified October 13 02:37 EDT 2008. Contains 145008 sequences.

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