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Number of ways to build a contiguous building with n LEGO blocks of size 1x8 on top of a fixed block of the same size.
0

%I #5 Oct 09 2013 14:20:53

%S 79,8509,1273567,211300931,37827088513

%N Number of ways to build a contiguous building with n LEGO blocks of size 1x8 on top of a fixed block of the same size.

%C The base block is not counted among the n and must be the only block in the bottom layer of the building

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

%K nonn,hard

%O 1,1

%A _Søren Eilers_, Oct 29 2006