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A081262
Number of distinct (modulo rotation and reflection) n X n associative magic squares.
2
1, 0, 1, 48, 48544, 0, 1125154039419854784
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OFFSET
1,4
LINKS
Table of n, a(n) for n=1..7.
Go Kato, Shin-ichi Minato, Enumeration of associative magic squares of order 7, arXiv:1906.07461 [math.CO], 2019.
Walter Trump, How many magic squares are there? - Results of historical and computer enumeration.
Eric Weisstein's World of Mathematics, Associative Magic Square
Index entries for sequences related to magic squares
CROSSREFS
Cf. A006052, A081263.
Sequence in context: A370515 A292516 A006070 * A340186 A238001 A228143
Adjacent sequences: A081259 A081260 A081261 * A081263 A081264 A081265
KEYWORD
nonn,hard,more
AUTHOR
Eric W. Weisstein, Mar 14 2003
EXTENSIONS
a(5) from Jud McCranie, Mar 17 2003
a(6) from Max Alekseyev, May 22 2008
a(7) from Go Kato, Nov 30 2018
STATUS
approved

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Last modified September 22 22:15 EDT 2024. Contains 376140 sequences. (Running on oeis4.)