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 A111031 #6 Dec 25 2024 12:50:12 %S A111031 302400,332640,362880,393120,403200,415800,423360,443520,453600, %T A111031 475200,491400,498960,504000,514080,524160,529200,554400,561600, %U A111031 564480,570240,574560,582120,589680,591360,604800,617760,633600,635040,642600,645120 %N A111031 Magic products of 5 X 5 multiplicative magic squares. %H A111031 Christian Boyer, <a href="http://www.multimagie.com/English/Multiplicative.htm">The smallest possible multiplicative magic squares</a>. %e A111031 Here is a 5 X 5 multiplicative magic square: %e A111031 12 35 1 40 18 %e A111031 36 2 24 7 25 %e A111031 14 45 15 4 8 %e A111031 5 16 42 39 3 %e A111031 10 6 20 9 28 %e A111031 The magic product of each row, column or diagonal is 302400. %K A111031 nonn,more %O A111031 0,1 %A A111031 Christian Boyer (cboyer(AT)club-internet.fr), Oct 05 2005