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15, 35, 77, 91, 143, 187, 209, 221, 247, 299, 323, 391, 437, 493, 527, 551, 589, 667, 703, 713, 851, 899, 943, 989, 1073, 1147, 1189, 1247, 1271, 1333, 1363, 1457, 1517, 1537, 1591, 1643, 1739, 1763, 1829, 1891, 1927, 1961, 2021, 2173, 2183, 2257, 2279
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| A082647(p^2) = A000005(p^2) - 1 = 2, where p is odd prime.
Numbers of the form p*q, where p and q are odd primes and p<q<2*p. - Vladeta Jovovic (vladeta(AT)eunet.rs), Jan 23 2004
Odd squarefree semiprimes of the form sp=p1*p2, p1<p2, 2*p1>p2. [From Vladimir Orlovsky (4vladimir(AT)gmail.com), May 19 2010]
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MATHEMATICA
| f[n_]:=Last/@FactorInteger[n]=={1, 1}&&FactorInteger[n][[1, 1]]>2&&Floor[FactorInteger[n][[2, 1]]/FactorInteger[n][[1, 1]]]==1; lst={}; Do[If[f[n], AppendTo[lst, n]], {n, 7!}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), May 19 2010]
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CROSSREFS
| Cf. A056913, A146166 [From Vladimir Orlovsky (4vladimir(AT)gmail.com), May 19 2010]
Sequence in context: A146656 A160497 A098271 * A109068 A061367 A070161
Adjacent sequences: A082660 A082661 A082662 * A082664 A082665 A082666
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KEYWORD
| easy,nonn
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AUTHOR
| Naohiro Nomoto (n_nomoto(AT)yabumi.com), May 18 2003
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