Number of ways to build a contiguous building with n LEGO blocks of size 2 X 4 on top of a fixed block of the same size.

A123830

Number of ways to build a contiguous building with n LEGO blocks of size 2 X 4 on top of a fixed block of the same size.

Terms

    a(0) =46a(1) =2596a(2) =194834a(3) =15834801a(4) =1395436949a(5) =128352319891

External references