A082644 - OEIS

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A082644

Floor(n*(n-1/2)/2).

0, 0, 1, 3, 7, 11, 16, 22, 30, 38, 47, 57, 69, 81, 94, 108, 124, 140, 157, 175, 195, 215, 236, 258, 282, 306, 331, 357, 385, 413, 442, 472, 504, 536, 569, 603, 639, 675, 712, 750, 790, 830, 871, 913, 957, 1001, 1046, 1092, 1140, 1188, 1237, 1287, 1339, 1391, 1444, 1498 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	FORMULA	`a(n) = floor(n^3/(2n+1)) [From Gary Detlefs (gdetlefs(AT)aol.com), Feb 11 2010]`
	MAPLE	`seq(floor(n^3/(2*n+1)), n=0..25); [From Gary Detlefs (gdetlefs(AT)aol.com), Feb 11 2010]`
	CROSSREFS	`Sequence in context: A022821 A001618 A118027 * A131024 A053982 A118000` `Adjacent sequences: A082641 A082642 A082643 * A082645 A082646 A082647`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), May 16 2003`

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Last modified February 15 14:36 EST 2012. Contains 205821 sequences.