%I #7 Dec 15 2017 17:36:29
%S 2,1,1,0,3,2,11,28,13,12,29,62,1,10,1,30,27,40,73,42,63,90,29,8,61,
%T 120,37,20,41,20,1,66,283,66,27,146,1,222,1,8,77,190,173,18,1,50,149,
%U 50,29,66,31,26,23,10,29,150,99,330,81,356,53,102,7,126,123,10,227,526,117,96
%N Least k such that A056830(n) + k is prime, where A056830 = alternate digits 1 and 0.
%e a(7)=28 because 1010101 + 28 = 1010129, a prime.
%K nonn,base
%O 0,1
%A _Jason Earls_, Jul 25 2003
