A124248 - OEIS

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A124248

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

0, 1, 3, 5, 7, 15, 23, 41, 57, 71, 81, 121, 139, 375, 623, 1143, 2629, 3011 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,3`
	EXAMPLE	`5 is in the sequence because 5!!+2^5=47 is prime.`
	CROSSREFS	`Cf. A124249.` `Sequence in context: A071169 A172235 A163979 * A029514 A061950 A166093` `Adjacent sequences: A124245 A124246 A124247 * A124249 A124250 A124251`
	KEYWORD	`more,nonn`
	AUTHOR	`Farideh Firoozbakht (mymontain(AT)yahoo.com), Nov 27 2006, corrected Nov 28 2006`

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Last modified February 17 08:44 EST 2012. Contains 205998 sequences.