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A052457 Number of bimagic series for squares of order n". 6
1, 0, 0, 2, 8, 98, 1844, 38039, 949738, 24643236, 947689757, 45828982764, 2151748695931, 123821075526032, 8131094055190149, 573957471153552576, 44010987379157415768, 3655486139293429450720, 333633403912637510806972 (list; graph; refs; listen; history; text; internal format)
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, A090653

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

Sequence in context: A006069 A270485 A223042 * A119654 A173976 A256398

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

STATUS

approved

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Last modified March 24 00:37 EDT 2017. Contains 283984 sequences.