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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
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OFFSET
1,2
COMMENTS
Next term > 70000.
LINKS
Table of n, a(n) for n=1..9.
S. Harvey,
Carol and Kynea Primes
.
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
Adjacent sequences:
A100900
A100901
A100902
*
A100904
A100905
A100906
KEYWORD
nonn
,
more
AUTHOR
Ray Chandler
, Nov 21 2004
STATUS
approved
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Last modified April 24 15:50 EDT 2024. Contains 371961 sequences. (Running on oeis4.)