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Search: id:A139316
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| A139316 |
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An integer n, n>=2, is in the sequence if (the sum of the exponents in the prime-factorization of n) divides (the sum of the distinct primes dividing n). |
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+0
1
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| 2, 3, 4, 5, 7, 11, 13, 15, 17, 19, 21, 23, 27, 28, 29, 31, 33, 35
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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28 has the prime factorization 2^2 * 7^1. The sum of the exponents, 2+1=3, divides the sum of the distinct prime divisors, 2+7=9. So 28 is in the sequence.
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CROSSREFS
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Adjacent sequences: A139313 A139314 A139315 this_sequence A139317 A139318 A139319
Sequence in context: A001729 A001087 A055464 this_sequence A062972 A036844 A033070
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KEYWORD
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more,nonn
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AUTHOR
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Leroy Quet (qq-quet(AT)mindspring.com), Jun 07 2008
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