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Search: id:A110229
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| A110229 |
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5-almost primes p * q * r * s * t relatively prime to p + q + r + s + t. |
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+0
12
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| 48, 80, 108, 112, 176, 208, 252, 272, 300, 304, 368, 405, 420, 464, 468, 496, 500, 567, 592, 656, 660, 675, 684, 688, 752, 848, 891, 924, 944, 976, 980, 1020, 1053, 1072, 1116, 1136, 1140, 1168, 1264, 1300, 1323, 1328, 1332, 1372, 1377, 1424, 1428, 1452
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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p, q, r, s, t are not necessarily distinct. The converse to this is A110230: 5-almost primes p * q * r * s * t which are not relatively prime to p+q+r+s+t. A014614 is the 5-almost primes.
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EXAMPLE
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48 is in this sequence because 48 = 2^4 * 3, which has no factors in common with 2 + 2 + 2 + 2 + 3 = 11.
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CROSSREFS
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Cf. A014614, A002033, A110187, A110188, A110227, A110228, A110230, A110231, A110232, A110289, A110290, A110296, A110297.
Sequence in context: A057533 A005276 A143722 this_sequence A108608 A030628 A065911
Adjacent sequences: A110226 A110227 A110228 this_sequence A110230 A110231 A110232
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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 17 2005
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EXTENSIONS
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Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Jul 20 2005
Incorrect formula and comment of Sep 2009 related to A002033 deleted - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Oct 14 2009
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