%I #4 Dec 05 2013 19:57:02
%S 1,11,11,111,1221,1221,12221,123321,1356531,1356531,13566531,
%T 135787531,1370219631,15072415941,15072415941,150725515941,
%U 1507390825941,15087488356941,152246473420041,1674711207620451,1674711207620451
%N a(n) = corresponding product of parts in A110380.
%e Using n ones and only the * sign we get the following sums.
%e 1 a(1) = 1
%e 11 a(2) =11
%e 1*11 a(3) = 11
%e 1 *111 a(4) =111
%e 11*111 a(5) = 1221
%e 1*11*111 a(6) =1221
%e 1*11*1111 a(7) =12221
%e 1*111*1111
%e 11*111*1111
%Y Cf. A110380.
%K base,easy,nonn
%O 1,2
%A _Amarnath Murthy_, Jul 25 2005
%E More terms from _Joshua Zucker_, May 08 2006