1,2
Also numbers n such that (16*10^n+17)/3 is prime.
Table of n, a(n) for n=1..8.
Makoto Kamada, Factorizations of 533...339.
Index entries for primes involving repunits.
Do[ If[ PrimeQ[(16*10^n + 17)/3], Print[n]], {n, 0, 10000}]
Sequence in context: A106874 A023331 A187923 * A166958 A112056 A033231
Adjacent sequences: A103009 A103010 A103011 * A103013 A103014 A103015
nonn
Robert G. Wilson v, Jan 18 2005
a(8) from Kamada data by Robert Price, Dec 14 2010
approved
