A089143 - OEIS

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A089143

9*2^n-6.

3, 12, 30, 66, 138, 282, 570, 1146, 2298, 4602, 9210, 18426, 36858, 73722, 147450, 294906, 589818, 1179642, 2359290, 4718586, 9437178, 18874362, 37748730, 75497466, 150994938, 301989882, 603979770, 1207959546, 2415919098, 4831838202, 9663676410, 19327352826 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,1`
	MATHEMATICA	`a=3; lst={a}; k=9; Do[a+=k; AppendTo[lst, a]; k+=k, {n, 0, 5!}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Dec 16 2008]`
	CROSSREFS	`Equals 3A033484.` `Sequence in context: A135503 A048088 A064181 A073952 A107231 A131936` `Adjacent sequences: A089140 A089141 A089142 * A089144 A089145 A089146`
	KEYWORD	`nonn`
	AUTHOR	`Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Sep 21 2004`

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Last modified February 17 11:46 EST 2012. Contains 206011 sequences.