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A138940
Indices n such that
A019328
(n)=Phi[n](10) is prime, where Phi is a cyclotomic polynomial.
+0
20
2, 4, 10, 12, 14, 19, 23, 24, 36, 38, 39, 48, 62, 93, 106, 120, 134, 150, 196, 317, 320, 385, 586, 597, 654, 738, 945
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Maintained by
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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.
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