A057220 - OEIS

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A057220

Numbers n such that 2^n - 23 is prime.

2, 4, 6, 8, 12, 14, 18, 36, 68, 152, 212, 324, 1434, 1592, 1668, 3338, 7908, 9662 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	COMMENTS	`Note that for the values 2 and 4 the primes are negative.`
	MATHEMATICA	`Do[ If[ PrimeQ[ 2^n - 23 ], Print[ n ] ], { n, 1, 15000} ]`
	CROSSREFS	`Sequence in context: A010063 A089623 A089681 * A082742 A100195 A131197` `Adjacent sequences: A057217 A057218 A057219 * A057221 A057222 A057223`
	KEYWORD	`nonn`
	AUTHOR	`Robert G. Wilson v (rgwv(AT)rgwv.com), Sep 16 2000`

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Last modified February 16 20:14 EST 2012. Contains 205962 sequences.