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A052457
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Number of bimagic series for squares of order n".
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6
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1, 0, 0, 2, 8, 98, 1844, 38039, 949738, 24643236, 947689757, 45828982764, 2151748695931, 123821075526032, 8131094055190149, 573957471153552576, 44010987379157415768, 3655486139293429450720, 333633403912637510806972
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,4
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LINKS
| Christian Boyer, Multimagic Squares
Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.
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CROSSREFS
| Cf. A052456, A052458, A090653
Cf. A052456, A052458, A090037, A090653, A106646.
Sequence in context: A156926 A001697 A006069 * A119654 A173976 A008926
Adjacent sequences: A052454 A052455 A052456 * A052458 A052459 A052460
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KEYWORD
| nonn,nice
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AUTHOR
| Eric Weisstein (eric(AT)weisstein.com)
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EXTENSIONS
| Extended Nov 08 2003, using the values of a(3) through a(11) from Christian Boyer's web site. - N. J. A. Sloane (njas(AT)research.att.com).
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(20) computed by Michael Quist Christian Boyer (cboyer(AT)club-internet.fr), Feb 06 2009
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