id:A109612 - OEIS Search Results

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Numbers n such that the string 44n is prime.

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3, 9, 21, 23, 41, 47, 51, 57, 63, 81 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`If n=3 then 44n = 443 which is a prime.` `If n=81 then 44n = 4481 which is a prime.`
	CROSSREFS	`Sequence in context: A146219 A128127 A006077 this_sequence A032668 A050839 A032640` `Adjacent sequences: A109609 A109610 A109611 this_sequence A109613 A109614 A109615`
	KEYWORD	`nonn`
	AUTHOR	`Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Aug 30 2005`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.