A089341 - OEIS

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A089341

Numbers n with spf(n) < gpf(n) < 2*spf(n), where spf=A020639, gpf=A006530.

6, 12, 15, 18, 24, 35, 36, 45, 48, 54, 72, 75, 77, 91, 96, 108, 135, 143, 144, 162, 175, 187, 192, 209, 216, 221, 225, 245, 247, 288, 299, 323, 324, 375, 384, 391, 405, 432, 437, 486, 493, 527, 539, 551, 576, 589, 637, 648, 667, 675, 703, 713, 768, 847, 851 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	COMMENTS	`A046665(a(n)) < A020639(a(n));` `A081306 without prime powers.`
	LINKS	`Eric Weisstein's World of Mathematics, Smooth Number`
	CROSSREFS	`A005279. [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Apr 01 2010]` `Sequence in context: A091011 A104210 A066312 * A129494 A001284 A063931` `Adjacent sequences: A089338 A089339 A089340 * A089342 A089343 A089344`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jan 03 2004`

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Last modified February 16 08:13 EST 2012. Contains 205893 sequences.