A053357 - OEIS

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A053357

Numbers n such that 281*2^n+1 is prime.

1, 7, 9, 11, 33, 81, 113, 143, 185, 227, 359, 393, 631, 1123, 1273, 1351, 3721, 4753, 6617, 9281, 12539, 12961, 19513, 23497, 29695, 33361, 88153 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	LINKS	`Ray Ballinger and Wilfrid Keller, List of primes k.2^n + 1 for k < 300` `Wilfrid Keller, List of primes k.2^n - 1 for k < 300` `Index entries for sequences of n such that k2^n-1 (or k2^n+1) is prime`
	CROSSREFS	`Sequence in context: A139058 A107226 A029611 * A029634 A023180 A029474` `Adjacent sequences: A053354 A053355 A053356 * A053358 A053359 A053360`
	KEYWORD	`hard,nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Dec 29 1999`

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Last modified February 14 07:57 EST 2012. Contains 205603 sequences.