OFFSET
1,2
COMMENTS
Terms beyond 435 are (BSW-)pseudoprimes. - Joerg Arndt, Jan 25 2011
a(19) > 60000. - Michael S. Branicky, Oct 27 2024
PROG
(Magma) [n: n in [0..400]|IsPrime(7^n+5^n-1)];
(PARI) for(n=1, 10000, if(isprime(7^n+5^n-1), print1(n, ", "))) /* Joerg Arndt, Jan 25 2011 */
CROSSREFS
KEYWORD
nonn,more,changed
AUTHOR
Vincenzo Librandi, Jan 22 2011
EXTENSIONS
a(11)-a(13) from Joerg Arndt, Jan 25 2011
a(14) from Vincenzo Librandi, Jul 28 2020
a(15)-a(16) from Michael S. Branicky, Apr 29 2023
a(17)-a(18) from Michael S. Branicky, Oct 27 2024
STATUS
approved