Home > Numbers
|Palindromes from Digit Sum Series (Posted on 2015-02-03)
Form a series, starting from 1,
Add to the last number the sum of its own digits, and then repeat.
Example: 1, 2, 4, 8, 16, 23, 28, 38 . . .
The 595th term is 10001, both of which are numerical palindromes.
How many such palindromic pairs does the series contain?
You must be logged in to post comments.)
Please log in:
About This Site
New Comments (9)
Top Rated Problems
This month's top
Most Commented On