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A086052
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Sum of first n 6-almost primes.
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2
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64, 160, 304, 464, 680, 904, 1144, 1468, 1804, 2156, 2516, 2916, 3332, 3818, 4322, 4850, 5390, 5934, 6494, 7094, 7702, 8326, 9055, 9791, 10547, 11331, 12123, 12933, 13749, 14589, 15469, 16369, 17281, 18209, 19145, 20137, 21137, 22177, 23281
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OFFSET
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1,1
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COMMENTS
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The first two elements in this sequence are themselves 6-almost primes. a(1) = 64 = 2^6. a(2) = 160 = 2^5 * 5. - Jonathan Vos Post, Dec 11 2004
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LINKS
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EXAMPLE
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a(2)=160 because sum of first two 6-almost primes, i.e. 64+96, is 160.
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MAPLE
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ListTools:-PartialSums(select(numtheory:-bigomega=6, [$1..2000])); # Robert Israel, Jun 28 2019
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MATHEMATICA
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Accumulate[Select[Range[1500], PrimeOmega[#]==6&]] (* Harvey P. Dale, May 15 2013 *)
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CROSSREFS
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KEYWORD
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easy,nonn
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AUTHOR
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STATUS
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approved
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