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Search: id:A110297
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| A110297 |
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8-almost primes p*q*r*s*t*u*v*w not relatively prime to p+q+r+s+t+u+v+w. |
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12
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| 256, 576, 896, 960, 1296, 1344, 1440, 1600, 1944, 2112, 2160, 2240, 2496, 2916, 3024, 3136, 3168, 3264, 3360, 3520, 3600, 3648, 4000, 4160, 4416, 4704, 4752, 4860, 4896, 4928, 5040, 5400, 5440, 5568, 5616, 5824, 5952, 6000, 6080, 6561, 6624, 6804, 7056
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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The primes p, q, r, s, t, u, v, w are not necessarily distinct. The 8-almost primes are A046310. The converse, A110296, is 8-almost primes p*q*r*s*t*u*v*w which are relatively prime to p+q+r+s+t+u+v+w.
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EXAMPLE
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576 = 2^6 * 3^2 is an element of this sequence because its sum of prime factors is 2 + 2 + 2 + 2 + 2 + 2 + 3 + 3 = 18 = 2 * 3^2 which is a factor of 576 and not relatively prime to 576.
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CROSSREFS
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Cf. A046310, A110187, A110188, A110227, A110228, A110229, A110230, A110231, A110232, A110289, A110290, A110296.
Sequence in context: A043336 A031465 A045081 this_sequence A134608 A134609 A086061
Adjacent sequences: A110294 A110295 A110296 this_sequence A110298 A110299 A110300
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KEYWORD
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easy,nonn
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AUTHOR
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Jonathan Vos Post (jvospost3(AT)gmail.com), Jul 18 2005
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EXTENSIONS
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Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Jul 20 2005
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