1,1

Nonpalindromes which are the sum of two palindromes but are not the sum of two palindromes whose lengths differ by 1.

Table of n, a(n) for n=1..53.

10 = 5+5 is a member, as is 109=101+8.

Cf. A002113, A261907, A261921.

Sequence in context: A190957 A163206 A246073 * A024527 A291894 A217322

Adjacent sequences: A261917 A261918 A261919 * A261921 A261922 A261923

nonn,base

David Applegate and N. J. A. Sloane, Sep 15 2015

approved