Take any 3 digit number, and make it's palindrome (by reading it backwards), and add them both together.
ex. 893 + 398
Take the sum of the 3 digit number and its palindrome and repeat the process.
1291 + 1921
Take that sum and repeat the process and... it's a palindrome number:
3212 + 2123 = 5335
Yeah, I know it's really geeky, like something that you would run home and tell your parents about after learning it from your third grade teacher, but admit it- you were kind of impressed, weren't you? I swear, at this rate, I'm going to be attending Star Trek conventions in my rainbow suspenders by the end of the week...