id:A144147 - OEIS Search Results

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A positive integer n is included if every exponent in the prime-factorization of n is coprime to n and if the sum of these prime-factorization exponents divides n.

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	OFFSET	`1,1`
	COMMENT	`All primes are included in the sequence. Any integer = 2*(odd prime) is included in the sequence. This sequence contains those terms in both sequence A074946 and sequence A144146.`
	LINKS	`Leroy Quet, Home Page (listed in lieu of email address)`
	EXAMPLE	`40 has the prime factorization of 2^3 * 5^1. The exponents are therefore 3 and 1. Both 3 and 1 are coprime to 40. And 3+1 = 4 divides 40. So 40 is included in the sequence.`
	CROSSREFS	`A074946, A144146` `Sequence in context: A103841 A003754 A087006 this_sequence A068422 A085118 A166158` `Adjacent sequences: A144144 A144145 A144146 this_sequence A144148 A144149 A144150`
	KEYWORD	`nonn`
	AUTHOR	`Leroy Quet Sep 11 2008`
	EXTENSIONS	`Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Nov 04 2008`

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

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