%I #2 Feb 11 2014 19:05:28
%S 1,1,22,2233,22334455,2233445544666688,
%T 22334455446666884466891067001143,
%U 2233445544666688446689106700114344668910893333766700336611667831
%N a(1) = a(2) = 1; a(n) = <>(a(n-1)) + <>(a(n-2)) for n > 2, where <>(k) denotes the concatenation of k with itself.
%e a(4) = <>(a(3)) + <>(a(2)) = <>(22) + <>(1) = 2222 + 11= 2233.
%K base,nonn
%O 1,3
%A _Joseph L. Pe_, Apr 12 2002