This reminds me of the "how many squares are there on a Go board" puzzle: http://senseis.xmp.net/?HowManySquaresOnAGoBoard http://senseis.xmp.net/?HowManySquare

This reminds me of the "how many squares are there on a Go board" puzzle: http://senseis.xmp.net/?HowManySquaresOnAGoBoard http://senseis.xmp.net/?HowManySquaresOnAGoBoard Hint: This time it's less than 18*18.