1,2

The last 2 terms were found with PFGW.exe

(PARI) g(n, m) = for(x=1, n, y=10*(11*10^x-1)+m; if(ispseudoprime(y), print1(x", ")))

Sequence in context: A141875 A163426 A165945 this_sequence A031343 A155483 A141891

Adjacent sequences: A123369 A123370 A123371 this_sequence A123373 A123374 A123375

hard,more,nonn

Cino Hilliard (hillcino368(AT)gmail.com), Oct 12 2006