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A058045 Numbers k such that (5^k + k)/3 is prime. 0
1, 8, 572, 4778, 12884 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
a(6) > 20065. - Jinyuan Wang, Jan 27 2020
LINKS
MATHEMATICA
Do[ If[ PrimeQ[ (5^n + n)/3 ], Print[ n ] ], {n, 1, 5000} ]
PROG
(PARI) is(n)=ispseudoprime((5^n+n)/3) \\ Charles R Greathouse IV, Jun 13 2017
CROSSREFS
Sequence in context: A240300 A240432 A275932 * A086641 A248706 A325292
KEYWORD
nonn,more
AUTHOR
Robert G. Wilson v, Nov 17 2000
EXTENSIONS
a(5) from Jinyuan Wang, Jan 27 2020
STATUS
approved

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Last modified June 13 15:51 EDT 2024. Contains 373389 sequences. (Running on oeis4.)