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A081262
Number of distinct (modulo rotation and reflection) n X n associative magic squares.
1
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?
Eric Weisstein's World of Mathematics,
Associative Magic Square
CROSSREFS
Cf.
A006052
,
A081263
.
Sequence in context:
A345646
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 May 17 23:39 EDT 2024. Contains 372608 sequences. (Running on oeis4.)