A052457 Number of bimagic series for squares of order n.

1, 0, 0, 2, 8, 98, 1844, 38039, 949738, 24643236, 947689757, 45828982764, 2151748695931, 123821075526032, 8131094055190149, 573957471153552576, 44010987379157415768, 3655486139293429450720, 333633403912637510806972

Offset

1,4

Links

Table of n, a(n) for n=1..19.

Christian Boyer, Multimagic Squares

Eric Weisstein's World of Mathematics, Multimagic Series.

Crossrefs

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

Sequence in context: A006069 A270485 A223042 * A119654 A333439 A173976

Adjacent sequences: A052454 A052455 A052456 * A052458 A052459 A052460

Keyword

nonn,nice

Author

Eric W. Weisstein

Extensions

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

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

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

a(17) computed by Walter Trump and communicated by Christian Boyer (cboyer(AT)club-internet.fr), Apr 02 2007

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

Status

approved