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A247958 Numbers n such that 35^n + 2 is prime. 2
0, 1, 15, 83, 1457, 3959, 5351, 5355, 41359, 50327, 54435 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

After 0, all terms are odd. - _Bruno Berselli_, Oct 01 2014

a(12) > 2*10^5. - _Robert Price_, Mar 21 2015

LINKS

Table of n, a(n) for n=1..11.

Henri & Renaud Lifchitz, PRP Top Records, Search for 35^n+2.

MAPLE

A247958:=n->`if`(isprime(35^n+2), n, NULL): seq(A247958(n), n=0..1000); # _Wesley Ivan Hurt_, Sep 30 2014

MATHEMATICA

Select[Range[0, 10000], PrimeQ[35^# + 2] &]

PROG

(MAGMA) [n: n in [0..1000]| IsPrime(35^n+2)];

(PARI) is(n)=ispseudoprime(35^n+2) \\ _Charles R Greathouse IV_, Jun 13 2017

CROSSREFS

Cf. similar sequences listed in A247957.

Sequence in context: A279395 A270768 A252935 * A108674 A050405 A241220

Adjacent sequences:  A247955 A247956 A247957 * A247959 A247960 A247961

KEYWORD

nonn,more

AUTHOR

_Vincenzo Librandi_, Sep 28 2014

EXTENSIONS

a(9)-a(11) from _Robert Price_, Mar 21 2015

STATUS

approved

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Last modified February 21 00:28 EST 2020. Contains 332086 sequences. (Running on oeis4.)