1/5 of the number of 5-colorings of a planar n X n X n triangular grid.

A153468

1/5 of the number of 5-colorings of a planar n X n X n triangular grid.

Terms

    a(0) =1a(1) =12a(2) =324a(3) =19764a(4) =2727756a(5) =852196788a(6) =602756140068

External references