id:A079460 - OEIS Search Results

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Let r(n) be the real positive root of x+x^2+x^3+....+x^n = 1, then a(n)=round(1/(r(n)-1/2)).

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2, 8, 23, 53, 115, 242, 496, 1006, 2028, 4074, 8168, 16358, 32740, 65506, 131040, 262110, 524252, 1048538, 2097112, 4194262, 8388564, 16777170, 33554384, 67108814, 134217676, 268435402, 536870856, 1073741766, 2147483588 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`For n>=6 a(n) = 2^(n+2)-2*n-2`
	CROSSREFS	`Sequence in context: A065694 A161463 A014285 this_sequence A154144 A018042 A072842` `Adjacent sequences: A079457 A079458 A079459 this_sequence A079461 A079462 A079463`
	KEYWORD	`nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Jan 12 2003`

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

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