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A047941 Number of 6-colorings of an n X n grid, up to rotational symmetry. 0

%I

%S 1,6,336,2521476,705277897416,7107572010747738816,

%T 2578606199622659276537193216,33678386561031835867238388699701784576,

%U 15835071665743319426540573726368249140484891508736

%N Number of 6-colorings of an n X n grid, up to rotational symmetry.

%F a(n) = (m^(n^2) + 2 m^((n^2 + 3 (n mod 2))/4) + m^((n^2 + (n mod 2))/2))/4, with m = 6

%Y Cf. A047937-A047945.

%K nonn

%O 0,2

%A _Rob Pratt_

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Last modified August 11 17:27 EDT 2020. Contains 336428 sequences. (Running on oeis4.)