A267375 Numbers n such that (47^n - 1)/46 is prime.

127, 18013, 39623

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