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A068941
Maximum number of chess queens that can be placed on a 4-dimensional chessboard of order n so that no two attack each other.
3
1, 1, 6, 16, 38, 80, 145
OFFSET
1,3
LINKS
Alexis Langlois-Rémillard, Christoph Müßig, and Érika Róldan, Complexity of Chess Domination Problems, arXiv:2211.05651 [math.CO], 2022-2023.
Eric Weisstein's World of Mathematics, Independence Number.
Al Zimmermann, Attacking Queens Programming Contest Database [broken link?]
CROSSREFS
Sequence in context: A058272 A049712 A092274 * A130902 A300371 A009955
KEYWORD
nonn,more
AUTHOR
Al Zimmermann, Mar 08 2002
EXTENSIONS
a(5) from Alexis Langlois-Rémillard, Christoph Müßig and Érika Roldán added by Christoph Muessig, Nov 11 2022
a(6)-a(7) from Alexis Langlois-Rémillard, Christoph Müßig and Érika Roldán added by Christoph Muessig, Apr 02 2023
STATUS
approved