%I #5 Mar 30 2012 18:35:42
%S 120,4320,277200,25945920,3632428800,670442572800,140792940288000
%N Smallest constant of a multiplicative bimagic square of order n.
%C Clearly this is a number k that has n^2 distinct factors multiplying to give k^n. For all the values checked so far, it is the smallest such number.
%H Christian Boyer, <a href="http://www.multimagie.com/English/Multiplicative.htm">The smallest possible multiplicative magic squares </a>.
%e Examples of a 3 X 3 multiplicative bimagic square with constant 120 are
%e 01 12 10
%e 15 02 04
%e 08 05 03
%e --------
%e 01 20 06
%e 12 02 05
%e 10 03 04
%e --------
%e 01 20 06
%e 08 03 05
%e 15 02 04
%K nonn
%O 3,1
%A Luke Pebody (ltp1000(AT)cam.ac.uk), Oct 20 2005
%E More terms from _David W. Wilson_, Feb 02 2006