login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A081262 Number of distinct (modulo rotation and reflection) n X n associative magic squares. 1
1, 0, 1, 48, 48544, 0, 1125154039419854784 (list; graph; refs; listen; history; text; internal format)
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: A011787 A292516 A006070 * A238001 A228143 A008704

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

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 21 22:47 EDT 2019. Contains 328315 sequences. (Running on oeis4.)