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Search: id:A100467
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| A100467 |
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Semiprimes of special form: sum of a semiprime k and the k-th semiprime. |
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+0
5
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| 14, 21, 34, 129, 141, 158, 187, 194, 206, 221, 361, 382, 391, 393, 674, 893, 922, 934, 1067, 1094, 1133, 1293, 1415, 1441, 1473, 1569, 1589, 1681, 1703, 1739, 1769, 1982, 2119, 2206, 2362, 2395, 2433, 2481, 2507, 2602, 2614, 2627, 2642, 2823, 2839, 2983
(list; graph; listen)
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OFFSET
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1,1
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LINKS
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Eric Weisstein, World of Mathematics, Semiprime.
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EXAMPLE
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34 is in the sequence because both 9 and 9+semiprime(9)=9+25=34
are semiprimes.
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CROSSREFS
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Cf. A001358, A100493, A100466, A100915, A100916.
Adjacent sequences: A100464 A100465 A100466 this_sequence A100468 A100469 A100470
Sequence in context: A121495 A084995 A100466 this_sequence A094393 A128705 A073250
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KEYWORD
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easy,nonn
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AUTHOR
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Jonathan Vos Post (jvospost2(AT)yahoo.com), Nov 20 2004
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EXTENSIONS
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Edited, corrected and extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Nov 26 2004
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