The numbers from 1 to 9 are arranged in a 3×3 grid:

*a b c*

*d e f*

*g h i*

subject to:

- The corner numbers are all odd.
- One diagonal sums to 20, and its numbers ascend from left to right.
- All of the numbers in one column are squares.
- One row sums to 20, and its numbers ascend from left to right.
- All of the numbers in one column are primes.
- In one row, one of the numbers is the product of the other two.
- One column’s numbers are consecutive (though not necessarily in order).
*a*= 3.

What are the values of *a* through *i*?

Submit your answer to Gene Wirchenko <genew@telus.net>. Your answer should be in the form of a proof. That means to show how your answer must be correct. **The deadline is Wednesday, June 26, 2013 at noon Pacific Time.** I will post the answer shortly after.