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a(n) = corresponding product of parts in A110380.
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%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