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A100903 Numbers n such that (10^n-1)^2-2 is prime. 3
1, 8, 21, 123, 4299, 6128, 11760, 18884, 40293 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Next term > 70000.
LINKS
PROG
(PARI) is(n)=ispseudoprime((10^n-1)^2-2) \\ Charles R Greathouse IV, Feb 19 2016
CROSSREFS
Sequence in context: A220611 A297340 A220580 * A358720 A240648 A231525
KEYWORD
nonn,more
AUTHOR
Ray Chandler, Nov 21 2004
STATUS
approved

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Last modified July 18 17:18 EDT 2024. Contains 374388 sequences. (Running on oeis4.)