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A128907
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Semiprimes pq such that p, q are odd primes and p < q <= 4p+11.
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0
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15, 21, 33, 35, 39, 51, 55, 57, 65, 69, 77, 85, 91, 95, 115, 119, 133, 143, 145, 155, 161, 187, 203, 209, 217, 221, 247, 253, 273, 299, 323, 341, 377, 391, 407
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| These semiprimes, a subset of A046388, appear in Ng. Abstract: "Let H be a Hopf algebra of dimension pq over an algebraically closed field of characteristic zero, where p, q are odd primes with p < q < 4p+12. We prove that H is semisimple and thus isomorphic to a group algebra, or the dual of a group algebra."
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LINKS
| Siu-Hung Ng, Hopf algebras of dimension pq, II
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FORMULA
| {p*q such that p, q are odd primes and p < q <= 4*p+11}.
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CROSSREFS
| Cf. A000040, A001358, A046388.
Sequence in context: A146166 A056913 A002557 * A020162 A046404 A198680
Adjacent sequences: A128904 A128905 A128906 * A128908 A128909 A128910
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KEYWORD
| easy,nonn
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AUTHOR
| Jonathan Vos Post (jvospost3(AT)gmail.com), Apr 21 2007
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