A120491 - OEIS

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A120491

Numbers n such that 22*3^n + 1 is prime.

0, 1, 2, 4, 5, 10, 12, 14, 24, 34, 37, 52, 56, 65, 68, 96, 106, 128, 156, 169, 236, 254, 481, 618, 641, 672, 700, 774, 1274, 1625, 1841 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,3`
	LINKS	`Table of n, a(n) for n=1..31.`
	EXAMPLE	`If n=96 then 22*3^n + 1 is a prime with 48 digits.`
	MATHEMATICA	`Select[Range[0, 2000], PrimeQ[22*3^# + 1] &] - Stefan Steinerberger, Aug 06 2006`
	PROG	`(MAGMA) [ n: n in [0..3000] \| IsPrime(22*3^n + 1) ] [From Vincenzo Librandi, Jan 31 2011]`
	CROSSREFS	`Cf. A003306.` `Sequence in context: A022770 A141481 A047611 * A177186 A022944 A133732` `Adjacent sequences: A120488 A120489 A120490 * A120492 A120493 A120494`
	KEYWORD	`nonn`
	AUTHOR	`Parthasarathy Nambi, Aug 04 2006`
	EXTENSIONS	`More terms from Stefan Steinerberger, Aug 06 2006`
	STATUS	`approved`

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Last modified June 17 23:56 EDT 2013. Contains 226327 sequences.