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%I #4 Mar 14 2023 17:07:35
%S 11,22,33,44,55,66,77,88,99,110,1111,2112,3113,4114,5115,6116,7117,
%T 8118,9119,220,1221,2222,3223,4224,5225,6226,7227,8228,9229,330,1331,
%U 2332,3333,4334,5335,6336
%N Concatenation of R(n) (A004086) and n, omitting leading 0's.
%e a(12) = 2112, a(1235) = 53211235
%t Table[10^IntegerLength[n] IntegerReverse[n]+n,{n,40}] (* _Harvey P. Dale_, Mar 14 2023 *)
%Y Cf. A071274.
%K nonn,base
%O 1,1
%A _Amarnath Murthy_, Jun 07 2002