id:A024215 - OEIS Search Results

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sum of squares of first n positive integers congruent to 1 mod 3.

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1, 17, 66, 166, 335, 591, 952, 1436, 2061, 2845, 3806, 4962, 6331, 7931, 9780, 11896, 14297, 17001, 20026, 23390, 27111, 31207, 35696, 40596, 45925, 51701, 57942, 64666, 71891, 79635, 87916, 96752, 106161, 116161, 126770, 138006, 149887, 162431, 175656, 189580 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`n(6n^2-3n-1)/2.`
	CROSSREFS	`Sequence in context: A065011 A031432 A157474 this_sequence A095071 A095072 A039452` `Adjacent sequences: A024212 A024213 A024214 this_sequence A024216 A024217 A024218`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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

AT&T Labs Research