%I #2 Feb 11 2014 19:05:28
%S 1,1,22,2233,22335544,2233554466886644,
%T 22335544668866446700441089106644,
%U 2233554466886644670044108910664466995742683267208933773289106644
%N a(1) = a(2) = 1; a(n) = <rev>(a(n-1)) + <rev>(a(n-2)) for n > 2, where <rev>(k) denotes the concatenation of k with its reversal.
%e a(5) = <>(a(4)) + <>(a(3)) = <>(2233) + <>(22) = 22333322 + 2222= 22335544.
%K base,nonn
%O 1,3
%A _Joseph L. Pe_, Apr 12 2002