A047943 Number of 8-colorings of an n X n grid, up to rotational symmetry.
1, 8, 1044, 33562880, 70368748374016, 9444732965876730429440, 81129638414606686199388699623424, 44601490397061246283080881278262737180295168, 1569275433846670190958947355821723644654155086251882971136
Offset: 0
Keywords
Links
- Andrew Howroyd, Table of n, a(n) for n = 0..25
Formula
a(n) = (m^(n^2) + 2 m^((n^2 + 3 (n mod 2))/4) + m^((n^2 + (n mod 2))/2))/4, with m = 8.
Extensions
Terms a(8) and beyond from Andrew Howroyd, Apr 14 2021