How to find out all palindromic numbers

Question

A palindromic number or numeral palindrome is a \"symmetrical\" number like 16461, that remains the same when its digits are reversed.

The term palindromic is derive

Answer 1

Revert your reasoning. Not try to find these numbers but instead create them. You can simply take any number and mirror it (which is always even in length) and for that same number simply add 0..9 in between (for the numbers with odd length).