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A267375 Numbers n such that (47^n - 1)/46 is prime. 1
127, 18013, 39623 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..3.

PROG

(PARI) is(n)=ispseudoprime((47^n-1)/46) \\ Charles R Greathouse IV, Jun 13 2017

CROSSREFS

Sequence in context: A058322 A252483 A138128 * A238995 A069408 A289474

Adjacent sequences:  A267372 A267373 A267374 * A267376 A267377 A267378

KEYWORD

nonn,more,hard

AUTHOR

Tim Johannes Ohrtmann, Feb 22 2016

STATUS

approved

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Last modified December 11 18:19 EST 2019. Contains 329925 sequences. (Running on oeis4.)