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%I #24 Nov 25 2015 08:18:21
%S 1,1,7,2507,159474576,310449924192274,15158246594803814603992,
%T 18503717079578845504700363135614,
%U 564688631502902660289311507800712928484099,430823235704701918614551410484249550325198643935836342
%N Number of colorings of an n X n grid with at most five interchangeable colors under rotational and reflectional symmetry.
%D F. Harary and E. Palmer, Graphical Enumeration, Academic Press, 1973.
%H Math StackExchange, <a href="http://math.stackexchange.com/questions/1540602/">A 4 x 4 grid of squares.</a>
%H Marko Riedel, <a href="/A264743/a264743.maple.txt">Maple code for Power Group Enumeration.</a>
%Y Cf. A182044, A264787.
%K nonn
%O 0,3
%A _Marko Riedel_, Nov 22 2015