id:A099317 - OEIS Search Results

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Minimal numbers having in canonical prime factorization at least one factor p^e such that e+1 is not prime, p prime and e>0.

+0
2

24, 120, 360, 840, 2520, 7560, 10080, 15120, 27720, 50400, 60480, 83160, 110880, 166320, 332640, 352800, 554400 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`A minimal number is the smallest number with a given number of divisors, see A007416;` `A000005(a(n)) = A072066(m) for some m.`
	EXAMPLE	`A007416(38) = A005179(64) = 7560 = 2^33^357;` `A007416(39) = A005179(72) = 10080 = 2^53^257.`
	CROSSREFS	`Cf. A005179.` `Sequence in context: A069074 A059775 A052762 this_sequence A052760 A052754 A050213` `Adjacent sequences: A099314 A099315 A099316 this_sequence A099318 A099319 A099320`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Oct 12 2004`

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Last modified September 8 08:06 EDT 2008. Contains 143486 sequences.