A056801 - OEIS

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A056801

Numbers n such that 4*9^n + 1 is prime.

0, 1, 3, 7, 627, 1653, 1761, 4801 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,3`
	MATHEMATICA	`Do[ If[ PrimeQ[ 49^n + 1], Print[ n ]], {n, 0, 10^4}] - Ryan Propper (rpropper(AT)stanford.edu), Mar 25 2007` `Select[Range[0, 5000], PrimeQ[4 9^#+1]&] ( From Harvey P. Dale, Dec 07 2011 *)`
	CROSSREFS	`Sequence in context: A120905 A062599 A101246 * A092568 A055624 A065244` `Adjacent sequences: A056798 A056799 A056800 * A056802 A056803 A056804`
	KEYWORD	`nonn,more`
	AUTHOR	`Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 22 2000`
	EXTENSIONS	`More terms from Ryan Propper (rpropper(AT)stanford.edu), Mar 25 2007`

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Last modified February 15 13:26 EST 2012. Contains 205802 sequences.