id:A082131 - OEIS Search Results

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Middle of semiprime triple: n-2, n, n+2 are semiprimes.

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93, 121, 143, 185, 203, 215, 217, 219, 289, 301, 303, 321, 393, 413, 415, 471, 517, 535, 581, 669, 687, 697, 791, 815, 1057, 1079, 1135, 1137, 1139, 1147, 1167, 1205, 1255, 1315, 1345, 1347, 1349, 1385, 1387, 1389, 1391, 1403, 1563, 1641, 1687 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`a(1)=93 because 91=713, 93=331 and 95=5*19 are semiprime.`
	CROSSREFS	`Cf. A001358, A082130.` `Sequence in context: A020320 A039550 A099019 this_sequence A048257 A044425 A044806` `Adjacent sequences: A082128 A082129 A082130 this_sequence A082132 A082133 A082134`
	KEYWORD	`nonn`
	AUTHOR	`Hugo Pfoertner (hugo(AT)pfoertner.org), Apr 04 2003`
	EXTENSIONS	`More terms from Jud McCranie, Apr 04 2003`

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Last modified July 26 23:19 EDT 2008. Contains 142293 sequences.

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