id:A113213 - OEIS Search Results

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Smallest number m such that 2^n +/- m are primes.

+0
2

0, 1, 3, 3, 9, 3, 21, 15, 9, 15, 21, 3, 45, 135, 75, 15, 99, 93, 99, 315, 105, 105, 15, 75, 339, 117, 261, 183, 351, 453, 1281, 267, 675, 867, 819, 117, 69, 2343, 1995, 1005, 2949, 165, 741, 603, 315, 1287, 1629, 243, 519, 765, 165, 1233, 741, 1797, 339, 177 (list; graph; listen)

	OFFSET	`1,3`
	COMMENT	`At n>=3 all terms are multiples of 3.`
	EXAMPLE	`a(1)=0 because 2^1 +/- 0 are primes; a(2)=1 because 2^2 -/+ 1 are primes;` `a(33)=675 because 2^33 +/- 675 are closest (to each other) primes.`
	CROSSREFS	`Sequence in context: A166466 A068219 A157031 this_sequence A088032 A066572 A104195` `Adjacent sequences: A113210 A113211 A113212 this_sequence A113214 A113215 A113216`
	KEYWORD	`nonn`
	AUTHOR	`Zak Seidov (zakseidov(AT)yahoo.com), Jan 07 2006`

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Last modified December 19 21:04 EST 2009. Contains 171054 sequences.

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