A057201 - OEIS

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A057201

Numbers n such that 2^n + 21 is prime.

1, 3, 4, 5, 7, 8, 11, 15, 16, 19, 44, 48, 51, 52, 61, 163, 196, 456, 492, 911, 997, 1616, 1631, 1647, 1803, 1899, 3112, 3584, 3956 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	MATHEMATICA	`Do[ If[ PrimeQ[ 2^n + 21 ], Print[ n ] ], {n, 1, 4000} ]`
	CROSSREFS	`Sequence in context: A066542 A003310 A038525 * A154571 A174269 A112882` `Adjacent sequences: A057198 A057199 A057200 * A057202 A057203 A057204`
	KEYWORD	`nonn`
	AUTHOR	`Robert G. Wilson v (rgwv(AT)rgwv.com), Sep 16 2000`

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Last modified February 15 23:53 EST 2012. Contains 205860 sequences.