For integral unit increments of x, what equation generates the values of y which are represented in the blocks?

Avoid the obvious.

3	10
21	36

Hint:
The trick works with Internet Explorer, Firefox and Opera but Opera may behave a little differently to mouse explorations; oh, concentrate on the higher part of each block.

(In reply to re(3): A sequential look.... by brianjn)

I have IE 6, and the mouseovers do work in this puzzle.

Posted by Charlie on 2008-06-19 10:16:32