Number of ways to build a contiguous building with n LEGO blocks of size 2 X 3 on top of a fixed block of the same size.

A123826

Number of ways to build a contiguous building with n LEGO blocks of size 2 X 3 on top of a fixed block of the same size.

Terms

    a(0) =31a(1) =1165a(2) =57415a(3) =3060464a(4) =176633912a(5) =10625603236a(6) =661642082820

External references