cp's OEIS Frontend

A088171 Numbers n such that the set S(n) = {k: k + reverse(k) = n} is not empty, at least one element of S(n) has the same number of digits as n and at least one element of S(n) has one digit less than n has.

%I A088171 #6 Mar 30 2012 17:27:41
%S A088171 121,1111,11011,12221,110011,121121,1100011,1112111,1197801,1208911,
%T A088171 1210121,1211111,1222221,11000011,11111111,11988801,12098911,12100121,
%U A088171 12101111,12211221,110000011,110121011,111089011,111101111,111111011
%N A088171 Numbers n such that the set S(n) = {k: k + reverse(k) = n} is not empty, at least one element of S(n) has the same number of digits as n and at least one element of S(n) has one digit less than n has.
%C A088171 Subsequence of A067030.
%C A088171 The most significant digit of all terms is 1.
%H A088171 <a href="/index/Res#RAA">Index entries for sequences related to Reverse and Add!</a>
%e A088171 1111 is a term since S(1111) = {209, 308, 407, 506, 605, 704, 803, 902, 1010, 1100}.
%Y A088171 Cf. A067030, A088169, A088170.
%K A088171 nonn,base
%O A088171 1,1
%A A088171 _Klaus Brockhaus_, Sep 21 2003