%I #7 Jul 21 2017 15:37:20

%S 1,6,79,1138,18057,296884,5022086,86581805,1515222912

%N Number of ways, counted up to symmetry, to build a contiguous building with n LEGO blocks of size 1 X 6 which is flat, i.e., with all blocks in parallel position.

%Y Cf. A112389, A123762 - A123827, A123829 - A123849.

%K nonn,hard

%O 1,2

%A _Søren Eilers_, Oct 29 2006