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A118842 Primes of the form ceiling(phi^n). 1
2, 3, 5, 7, 47, 2207 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(7) = ceiling(phi^51169) has 10,694 decimal digits.

LINKS

Table of n, a(n) for n=1..6.

Eric Weisstein's World of Mathematics, Phi-Prime

FORMULA

a(n)=A062724(A118841(n)). - R. J. Mathar, Sep 07 2007

PROG

(PARI) phi=(1+sqrt(5))/2; for(n=1, 1e4, if(ispseudoprime(t=ceil(phi^n)), print1(t", "))) \\ Charles R Greathouse IV, Jul 29 2011

CROSSREFS

Cf. A118841.

Sequence in context: A171020 A214179 A178237 * A244595 A244597 A237439

Adjacent sequences:  A118839 A118840 A118841 * A118843 A118844 A118845

KEYWORD

nonn,hard

AUTHOR

Eric W. Weisstein, May 01 2006

STATUS

approved

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Last modified July 25 22:19 EDT 2021. Contains 346294 sequences. (Running on oeis4.)