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A171686 Numbers k such that (10^k)^4 + (10^k+1)^4 is prime. 0
0, 3, 10, 22, 59, 84, 5604 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
No more terms up to k = 4200.
LINKS
PROG
(PARI) is(n)=ispseudoprime((10^n)^4+(10^n+1)^4) \\ Charles R Greathouse IV, Jun 13 2017
CROSSREFS
Sequence in context: A222629 A070880 A321335 * A027164 A292921 A270470
KEYWORD
more,nonn
AUTHOR
Jason Earls, Dec 15 2009
EXTENSIONS
a(7) from Michael S. Branicky, Mar 21 2024
STATUS
approved

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Last modified July 15 14:56 EDT 2024. Contains 374333 sequences. (Running on oeis4.)