This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A111155 #5 Mar 30 2012 18:35:42 %S A111155 120,4320,277200,25945920,3632428800,670442572800,140792940288000 %N A111155 Smallest constant of a multiplicative bimagic square of order n. %C A111155 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 A111155 Christian Boyer, <a href="http://www.multimagie.com/English/Multiplicative.htm">The smallest possible multiplicative magic squares </a>. %e A111155 Examples of a 3 X 3 multiplicative bimagic square with constant 120 are %e A111155 01 12 10 %e A111155 15 02 04 %e A111155 08 05 03 %e A111155 -------- %e A111155 01 20 06 %e A111155 12 02 05 %e A111155 10 03 04 %e A111155 -------- %e A111155 01 20 06 %e A111155 08 03 05 %e A111155 15 02 04 %K A111155 nonn %O A111155 3,1 %A A111155 Luke Pebody (ltp1000(AT)cam.ac.uk), Oct 20 2005 %E A111155 More terms from _David W. Wilson_, Feb 02 2006