1,2

Numbers corresponding to terms <= 864 are certified primes. - Klaus Brockhaus, Feb 15 2005

Table of n, a(n) for n=1..13.

(PARI) is(n)=ispseudoprime(9*10^n-11) \\ Charles R Greathouse IV, May 22 2017

Cf. A092767.

Sequence in context: A075331 A237878 A065661 * A307165 A234275 A284810

Adjacent sequences: A100272 A100273 A100274 * A100276 A100277 A100278

nonn,more

R. K. Guy, Dec 29 2004

More terms from Patrick De Geest, Dec 29 2004

a(1)=1 inserted by Tom Mueller, Feb 08 2005

Edited by R. J. Mathar, Aug 06 2008

approved