Number of spanning trees of the graph acquired by placing a vertex in each of the n^2 cells of a triangle of size n in a triangular grid and placing edges between two vertices whenever two cells share a side.

A351888

Number of spanning trees of the graph acquired by placing a vertex in each of the n^2 cells of a triangle of size n in a triangular grid and placing edges between two vertices whenever two cells share a side.

Terms

    a(0) =1a(1) =1a(2) =6a(3) =196a(4) =33620a(5) =29805312a(6) =135418115000

External references