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A137236 Numbers k such that 13^k + 4 is prime. 3
0, 1, 2, 6, 10, 15, 94, 198, 219, 4543, 11511, 12638, 45606 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
COMMENTS
a(14) > 10^5. - Tyler NeSmith, May 09 2021
LINKS
Henri Lifchitz and Renaud Lifchitz, PRP Records.
PROG
(PARI) for(n=0, 300, if(isprime(13^n+4), print1(n", ")))
CROSSREFS
Sequence in context: A369237 A097022 A370114 * A124198 A032426 A220453
KEYWORD
hard,more,nonn
AUTHOR
Jason Earls, Mar 08 2008
EXTENSIONS
a(13) from Lelio R. Paula contributed by Iain Fox, Nov 24 2017
STATUS
approved

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Last modified April 22 17:34 EDT 2024. Contains 371905 sequences. (Running on oeis4.)