Fw: smallest all-semiprime magic square

[David Wilson]

----- Original Message ----- 
From: "David Wilson" <davidwwilson at comcast.net>
To: <franktaw at netscape.net>
Sent: Sunday, December 24, 2006 10:55 AM
Subject: Re: smallest all-semiprime magic square


> According to my program...
>
> The smallest 3x3 semiprime magic square appears to be
>
> 22 129 95
> 155 82 9
> 69 35 142
>
> with sum = 246.
>
> If you want squarefree semiprimes, then you want
>
> 34 178 142
> 226 118 10
> 94 58 202
>
> with sum = 354,  twice the smallest 3x3 prime square.
>
> If you want squarefree semiprimes and no nontrivial common divisor of the 
> entries, you want
>
> 87 235 209
> 299 177 55
> 145 119 267
>
> with sum = 531.
>
>
>
>