A032353 - OEIS

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A032353

Numbers n such that 7*2^n+1 is prime.

2, 4, 6, 14, 20, 26, 50, 52, 92, 120, 174, 180, 190, 290, 320, 390, 432, 616, 830, 1804, 2256, 6614, 13496, 15494, 16696, 22386, 54486, 88066, 95330, 207084, 283034 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	LINKS	`Ray Ballinger, Proth Search Page` `Ray Ballinger and Wilfrid Keller, List of primes k.2^n + 1 for k < 300` `Y. Gallot, Proth.exe: Windows Program for Finding Large Primes` `Wilfrid Keller, List of primes k.2^n - 1 for k < 300` `Eric Weisstein's World of Mathematics, Proth Prime` `Index entries for sequences of n such that k2^n-1 (or k2^n+1) is prime`
	CROSSREFS	`Cf. A002255, A050526.` `Sequence in context: A124693 A095698 A064409 * A062112 A084685 A151794` `Adjacent sequences: A032350 A032351 A032352 * A032354 A032355 A032356`
	KEYWORD	`nonn,hard`
	AUTHOR	`Jim Buddenhagen (jbuddenh(AT)gmail.com)`

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Last modified February 16 17:11 EST 2012. Contains 205938 sequences.