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Search: id:A138936
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| A138936 |
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Indices n such that A019324(k)=Phi[k](6) is prime, where Phi is a cyclotomic polynomial. |
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+0
1
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| 1, 2, 3, 4, 6, 7, 8, 18, 21, 22, 24, 29, 30, 42, 50, 62, 71, 86, 90, 94, 118, 124, 127, 144, 154, 192, 214, 271, 354, 360, 411, 480, 509, 558, 575, 663, 764, 814, 825, 874
(list; graph; listen)
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OFFSET
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1,2
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LINKS
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Yves Gallot, Cyclotomic polynomials and prime numbers
Index entries for cyclotomic polynomials, values at X
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PROGRAM
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(PARI) for( i=1, 999, ispseudoprime( polcyclo(i, 6)) & print1( i", ")) /* use ...subst(polcyclo(i), x, 6)... in PARI < 2.4.2 */
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CROSSREFS
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Cf. A019324, A138920-A138940.
Sequence in context: A039087 A093710 A091421 this_sequence A135604 A084826 A118944
Adjacent sequences: A138933 A138934 A138935 this_sequence A138937 A138938 A138939
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KEYWORD
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nonn
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AUTHOR
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M. F. Hasler (www.univ-ag.fr/~mhasler), Apr 03 2008
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