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A123195
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Numbers n such that A065507[n] = n.
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0
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OFFSET
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1,1
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COMMENTS
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A065507[n] is the smallest prime q such that (p^q+1)/(p+1) is a prime, where p = Prime(n).
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LINKS
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EXAMPLE
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A065507[n] begins {3, 3, 5, 3, 5, 3, 7, 17, 11, 7, 109, 5, 17, 5, 5, 21943, 17,...}.
Thus
a(3) = 17 because A065507[17] = 17.
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CROSSREFS
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KEYWORD
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hard,more,nonn
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AUTHOR
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STATUS
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approved
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