A137653 - OEIS

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A137653

Numbers n such that 12^n+7 is prime.

1, 2, 4, 5, 6, 20, 21, 22, 28, 58, 120, 144, 1100, 1926 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	MATHEMATICA	`Do[If[PrimeQ[(12^n+7)], Print[n]], {n, 2000}]`
	CROSSREFS	`Cf. A137652, A137654.` `Sequence in context: A008319 A033311 A098504 * A021411 A005532 A026202` `Adjacent sequences: A137650 A137651 A137652 * A137654 A137655 A137656`
	KEYWORD	`nonn`
	AUTHOR	`Zak Seidov (zakseidov(AT)yahoo.com), Feb 01 2008`

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Last modified February 17 20:48 EST 2012. Contains 206085 sequences.