id:A089950 - OEIS Search Results

Search: id:A089950

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a(n)= sum_{k=0...n}A001652(k).

+0
2

0, 3, 23, 142, 838, 4897, 28557, 166460, 970220, 5654879, 32959075, 192099594, 1119638514, 6525731517, 38034750617, 221682772216, 1292061882712, 7530688524091, 43892069261871, 255821727047174, 1491038293021214 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(n)=A000129(n+1)^2-floor((n+2)/2); e.g. 0=1^2-1 and 166460=408^2-4`
	CROSSREFS	`Sequence in context: A031970 A049164 A081413 this_sequence A057835 A079755 A006184` `Adjacent sequences: A089947 A089948 A089949 this_sequence A089951 A089952 A089953`
	KEYWORD	`nonn`
	AUTHOR	`Charlie Marion (charliemath(AT)verizon.net), Jan 11 2004`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research