login
Number of ways, counted up to symmetry, to build a contiguous building with n LEGO blocks of size 1 X 8 which is flat, i.e., with all blocks in parallel position.
0

%I #7 Jul 21 2017 15:39:16

%S 1,8,145,2884,62517,1404472,32430749,763219988,18231473349

%N Number of ways, counted up to symmetry, to build a contiguous building with n LEGO blocks of size 1 X 8 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