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Search: id:A128907
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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
1
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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; listen)
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OFFSET
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1,1
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COMMENT
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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
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Siu-Hung Ng, Hopf algebras of dimension pq, II
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FORMULA
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{p*q such that p, q are odd primes and p < q <= 4*p+11}.
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CROSSREFS
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Cf. A000040, A001358, A046388.
Sequence in context: A146166 A056913 A002557 this_sequence A020162 A046404 A099610
Adjacent sequences: A128904 A128905 A128906 this_sequence A128908 A128909 A128910
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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), Apr 21 2007
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