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 A052457 #21 Feb 16 2025 08:32:42 %S A052457 1,0,0,2,8,98,1844,38039,949738,24643236,947689757,45828982764, %T A052457 2151748695931,123821075526032,8131094055190149,573957471153552576, %U A052457 44010987379157415768,3655486139293429450720,333633403912637510806972 %N A052457 Number of bimagic series for squares of order n. %H A052457 Christian Boyer, <a href="http://www.multimagie.com/indexengl.htm">Multimagic Squares</a> %H A052457 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/MultimagicSeries.html">Multimagic Series.</a> %Y A052457 Cf. A052456, A052458, A090037, A106646, A090653. %K A052457 nonn,nice %O A052457 1,4 %A A052457 _Eric W. Weisstein_ %E A052457 Extended Nov 08 2003, using the values of a(3) through a(11) from Christian Boyer's web site. - _N. J. A. Sloane_. %E A052457 a(12) from Christian Boyer (cboyer(AT)club-internet.fr), Nov 05 2004 %E A052457 a(13)-a(15) computed by Lorenz Schlangen and later independently confirmed by _Walter Trump_. a(16) computed by _Walter Trump_. - Christian Boyer (cboyer(AT)club-internet.fr), Oct 04 2005 %E A052457 a(17) computed by _Walter Trump_ and communicated by Christian Boyer (cboyer(AT)club-internet.fr), Apr 02 2007 %E A052457 a(18)-a(19) computed by Michael Quist Christian Boyer (cboyer(AT)club-internet.fr), Feb 06 2009