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1 Palindrome 1 (Posted on 2006-06-10) Difficulty: 2 of 5
Take a standard 8x8 chessboard, number the black squares 1 and the white squares 0. How many palindromes does this board contain in 'word-search' fashion?

Now generalize and find a formula for any n*n board.

Notes: A palindrome and its reversal should not be counted twice. A palindrome must be at least two digits long and leading zeroes are not allowed. Numbers can be read in any single vertical, horizontal or diagonal direction.

See The Solution Submitted by Jer    
Rating: 3.6667 (3 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
some numbers by actual countCharlie2006-06-11 10:08:42
re: partial solutionCharlie2006-06-11 09:52:16
Triangular numbersbrianjn2006-06-11 08:17:22
re: questionJustin2006-06-10 18:44:54
QuestionquestionCharlie2006-06-10 18:34:59
partial solutionJustin2006-06-10 17:30:17
Some Thoughtsre: Some numbersPhil_Osopher2006-06-10 17:29:14
Hints/TipsSome numberse.g.2006-06-10 16:24:54
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