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

1,1

COMMENTS

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

LINKS

Eric Weisstein's World of Mathematics, Phi-Prime

FORMULA

a(n)=A062724(A118841(n)). - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), 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: A120804 A171020 A178237 * A048402 A171029 A090717

Adjacent sequences:  A118839 A118840 A118841 * A118843 A118844 A118845

KEYWORD

nonn,hard

AUTHOR

Eric Weisstein (eric(AT)weisstein.com), May 01, 2006

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Last modified February 17 03:30 EST 2012. Contains 205978 sequences.