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Search: id:A088550
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| A088550 |
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Primes of the form x^6 + x^5 + x^4 + x^3 + x^2 + x + 1. |
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+0
1
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| 7, 127, 1093, 19531, 55987, 5229043, 8108731, 25646167, 321272407, 917087137, 3092313043, 4201025641, 9684836827, 31401724537, 47446779661, 52379047267, 83925549247, 100343116693, 141276239497, 153436090543, 265462278481
(list; graph; listen)
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OFFSET
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1,1
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MATHEMATICA
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lst={}; Do[a=1+n+n^2+n^3+n^4+n^5+n^6; If[PrimeQ[a], AppendTo[lst, a]], {n, 6!}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Jun 02 2009]
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PROGRAM
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(PARI) polypn(n, p) = { for(x=1, n, if(p%2, y=2, y=1); for(m=1, p, y=y+x^m; ); if(isprime(y), print1(y", ")); ) }
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CROSSREFS
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Sequence in context: A139987 A061744 A053716 this_sequence A064754 A025166 A139291
Adjacent sequences: A088547 A088548 A088549 this_sequence A088551 A088552 A088553
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KEYWORD
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nonn
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AUTHOR
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Cino Hilliard (hillcino368(AT)gmail.com), Nov 17 2003
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