OFFSET
1,2
COMMENTS
The corresponding primes are in A145851. Primes found and proved by PrimeForm. No more terms up to 30000.
PROG
(PARI) is(n)=ispseudoprime((n+1)*10^n-1) \\ Charles R Greathouse IV, May 22 2017
CROSSREFS
KEYWORD
nonn
AUTHOR
Rick L. Shepherd, Mar 22 2010
STATUS
approved