A138083 - OEIS

This site is supported by donations to The OEIS Foundation.

A138083

Numbers n such that (3^(2^n) + 1)/2 is prime.

0, 1, 2, 4, 5, 6 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,3`
	COMMENTS	`See A171381, which is the main entry for this sequence.`
	CROSSREFS	`Cf. A093625, A171381.` `Sequence in context: A026404 A170882 A116680 * A181524 A077867 A123124` `Adjacent sequences: A138080 A138081 A138082 * A138084 A138085 A138086`
	KEYWORD	`nonn,more,hard`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Dec 09 2009`

Content is available under The OEIS End-User License Agreement .

Last modified February 15 21:03 EST 2012. Contains 205852 sequences.