heterosquares and less restrictive variations

[Jon Awbrey]

o~~~~~~~~~o~~~~~~~~~o~~~~~~~~~o~~~~~~~~~o~~~~~~~~~o~~~~~~~~~o

i think potter-heads would call that a "squib square" ...

jon

Leroy Quet wrote:
> 
> A "heterosquare" is like a magic-square, except that
> we want the sums of the columns, of the rows, and of
> the main diagonals to each be DISTINCT. The integers
> 1,2,3,...,n^2 are put in the cells of the square, of
> course.
> 
> http://mathworld.wolfram.com/Heterosquare.html
> 
<...>

o~~~~~~~~~o~~~~~~~~~o~~~~~~~~~o~~~~~~~~~o~~~~~~~~~o~~~~~~~~~o
inquiry e-lab: http://stderr.org/pipermail/inquiry/
mwb: http://www.mywikibiz.com/Directory:Jon_Awbrey
knol: http://knol.google.com/k/-/-/3fkwvf69kridz/1
mathweb: http://www.mathweb.org/wiki/User:Jon_Awbrey
p2p wiki: http://www.p2pfoundation.net/User:JonAwbrey
planet math: http://planetmath.org/?op=userobjs;id=15246
semantic web: http://semanticweb.org/wiki/User:Jon_Awbrey
ontolog: http://ontolog.cim3.net/cgi-bin/wiki.pl?JonAwbrey
c: http://www.altheim.com/ceryle/wiki/Wiki.jsp?page=JonAwbrey
wp review: http://wikipediareview.com/index.php?showuser=5619
o~~~~~~~~~o~~~~~~~~~o~~~~~~~~~o~~~~~~~~~o~~~~~~~~~o~~~~~~~~~o