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Search: id:A155903
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| A155903 |
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Primes of the form x^3+x^2+1, where x is a prime. |
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+0
1
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| 13, 37, 151, 1453, 12697, 106033, 151687, 362953, 712891, 1040503, 5767381, 7004353
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Only primes of the form 3k+2 can generate this series [only exception is a(2)=37, generated by x=3].
No prime of this sequence can generate another term in this sequence because all terms of this sequence are 1 modulo 3.
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EXAMPLE
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a(12) = 7004353 = 191^3+191^2+1
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CROSSREFS
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Sequence in context: A155300 A155252 A155297 this_sequence A139860 A036570 A147615
Adjacent sequences: A155900 A155901 A155902 this_sequence A155904 A155905 A155906
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KEYWORD
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nonn
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AUTHOR
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Avik Roy (avik_3.1416(AT)yahoo.co.in), Jan 30 2009
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