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%I #5 Oct 09 2013 14:20:52
%S 1,1,43,289,3796,30757,384465,3363194
%N Number of ways, counted up to symmetry, to build a contiguous building with n LEGO blocks of size 1x6 which is symmetric after a rotation by 180 degrees.
%Y Cf. A112389, A123762 - A123827, A123829 - A123849.
%K nonn
%O 1,3
%A _Søren Eilers_, Oct 29 2006
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