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A126906
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Smallest k such that 1 + k^(2*n+1)+Sum{j=1..n} k^(2*j) is prime.
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0
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1, 2, 1, 2, 1, 10, 17, 2, 1, 2, 1, 94, 122, 22, 1
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| 1 is a term if and only if number of terms in polynomial is prime
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CROSSREFS
| Cf. A124151, A119863, A049407, A124175 A124176 A124177, A124178, A124179, A124180, A124181, A126908-A126916.
Sequence in context: A071559 A071560 A097749 * A179508 A134304 A134569
Adjacent sequences: A126903 A126904 A126905 * A126907 A126908 A126909
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KEYWORD
| nonn
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AUTHOR
| Artur Jasinski (grafix(AT)csl.pl), Dec 31 2006
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