Largest n-digit palindromic multiple of n with a digit sum that is also a multiple of n, or 0 if no such number exists. For n a multiple of 10 it is sufficient that a(n) be palindromic when trailing zeros are ignored.

A084022

Largest n-digit palindromic multiple of n with a digit sum that is also a multiple of n, or 0 if no such number exists. For n a multiple of 10 it is sufficient that a(n) be palindromic when trailing zeros are ignored.