%I A110774
%S A110774 11,3,11,33,1111111,3333333333,
%T A110774 11111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111
%N A110774 Copies of 1 and 3 alternately such that every partial concatenation is 
               a prime.
%e A110774 11, 113, 11311, etc. are primes.
%Y A110774 Cf. A110775, A110776, A110777, A110778, A112534, A110780, A110781, A110782, 
               A110783, A110788, A110789.
%Y A110774 Sequence in context: A083968 A082769 A110435 this_sequence A067063 A075023 
               A088262
%Y A110774 Adjacent sequences: A110771 A110772 A110773 this_sequence A110775 A110776 
               A110777
%K A110774 base,nonn
%O A110774 1,1
%A A110774 Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Aug 12 2005
%E A110774 The next term is too large to include.
%E A110774 Corrected and extended by Joshua Zucker, Jan 11 2006