1,1
Table of n, a(n) for n=1..4.
Makoto Kamada, Prime numbers of the form 833...33.
Index entries for primes involving repunits
Cf. A002275, A056723 (corresponding k).
Sequence in context: A287686 A087532 A116307 * A221416 A130432 A317437
Adjacent sequences: A093673 A093674 A093675 * A093677 A093678 A093679
nonn
Rick L. Shepherd, Apr 08 2004
approved