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A118841
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Numbers n such that ceiling(phi^n) is prime.
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1
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OFFSET
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1,2
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COMMENTS
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LINKS
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Eric Weisstein's World of Mathematics, Phi-Prime
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PROG
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(PARI) c(n) = 3*fibonacci(n-1) + fibonacci(n-2) + (n % 2); \\ A169986(n) for n >= 1
for(n=1, 10^7, if(ispseudoprime(c(n)), print1(n, ", ")))
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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