id:A032623 - OEIS Search Results

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Numbers n such that n concatenated with n + 8 is a prime.

+0
2

1, 3, 13, 15, 21, 39, 49, 55, 69, 75, 91, 111, 115, 159, 163, 165, 169, 171, 183, 193, 195, 199, 201, 205, 211, 229, 235, 241, 249, 265, 271, 273, 289, 291, 309, 313, 319, 321, 325, 331, 333, 349, 351, 355, 363, 379, 381, 385, 391, 393, 405, 423, 441, 445 (list; graph; listen)

	OFFSET	`1,2`
	CROSSREFS	`Cf. A032613.` `Sequence in context: A101235 A045233 A113487 this_sequence A146512 A082704 A152270` `Adjacent sequences: A032620 A032621 A032622 this_sequence A032624 A032625 A032626`
	KEYWORD	`nonn`
	AUTHOR	`Patrick De Geest (pdg(AT)worldofnumbers.com), May 15, 1998.`

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Last modified December 4 12:48 EST 2009. Contains 170310 sequences.

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