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Number of bimagic series for squares of order n.
6

%I #20 Dec 21 2020 17:14:09

%S 1,0,0,2,8,98,1844,38039,949738,24643236,947689757,45828982764,

%T 2151748695931,123821075526032,8131094055190149,573957471153552576,

%U 44010987379157415768,3655486139293429450720,333633403912637510806972

%N Number of bimagic series for squares of order n.

%H Christian Boyer, <a href="http://www.multimagie.com/indexengl.htm">Multimagic Squares</a>

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/MultimagicSeries.html">Multimagic Series.</a>

%Y Cf. A052456, A052458, A090037, A106646, A090653.

%K nonn,nice

%O 1,4

%A _Eric W. Weisstein_

%E Extended Nov 08 2003, using the values of a(3) through a(11) from Christian Boyer's web site. - _N. J. A. Sloane_.

%E a(12) from Christian Boyer (cboyer(AT)club-internet.fr), Nov 05 2004

%E 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 a(17) computed by _Walter Trump_ and communicated by Christian Boyer (cboyer(AT)club-internet.fr), Apr 02 2007

%E a(18)-a(19) computed by Michael Quist Christian Boyer (cboyer(AT)club-internet.fr), Feb 06 2009