id:A081858 - OEIS Search Results

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Numbers n such that (2n+1) divides (2^n-1).

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0, 3, 8, 11, 15, 20, 23, 35, 36, 39, 44, 48, 51, 56, 63, 68, 75, 83, 95, 96, 99, 111, 116, 119, 120, 128, 131, 135, 140, 155, 156, 168, 170, 176, 179, 183, 191, 200, 204, 215, 216, 219, 224, 228, 231, 239, 243, 251, 260, 280, 284, 288, 296, 299, 300, 303, 308 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`n such that A002326(n)=n`
	CROSSREFS	`Cf. A014664.` `Sequence in context: A020680 A051245 A003157 this_sequence A145837 A111132 A003234` `Adjacent sequences: A081855 A081856 A081857 this_sequence A081859 A081860 A081861`
	KEYWORD	`nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Apr 11 2003`

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.

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