[ August 7, 2004 ]
A simple procedure to arrive at palindromes
Paul Oliverio (email)

It is best if done only on a calculator.
Simplifying the steps -- or seeing them written out --
makes it too obvious what is happening.

Start with 36.k – 63

where k ⩾ 10

let n = # of digits

reverse the digits and divide by 9

then multiply by 25*10^(n–2)

add k and multiply this result by 36

subtract 63

result is a palindrome !