id:A136153 - OEIS Search Results

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Composites one larger than a prime, with exactly four distinct prime factors.

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390, 420, 462, 510, 570, 660, 770, 798, 840, 858, 930, 1020, 1050, 1092, 1110, 1218, 1230, 1260, 1290, 1302, 1320, 1410, 1428, 1430, 1482, 1554, 1560, 1610, 1638, 1710, 1722, 1848, 1890, 1914, 1932, 1950, 1974, 1980, 2030, 2040, 2070, 2090, 2100, 2130 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`Equals A008864 INTERSECT A033993. - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Feb 20 2008`
	EXAMPLE	`a(0)=390 because 30 follows the prime 29 and has four prime factors 2, 3, 5 and 13.`
	CROSSREFS	`Cf. A136151 A136152 A136154 A136155.` `Sequence in context: A052377 A154624 A052353 this_sequence A069477 A108573 A158004` `Adjacent sequences: A136150 A136151 A136152 this_sequence A136154 A136155 A136156`
	KEYWORD	`easy,nonn`
	AUTHOR	`Enoch Haga (Enokh(AT)comcast.net), Dec 16 2007`
	EXTENSIONS	`Edited by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Feb 20 2008`

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Last modified November 25 14:49 EST 2009. Contains 167514 sequences.

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