Complexity of (or spanning trees in) a 3 X n grid.

A006238

Complexity of (or spanning trees in) a 3 X n grid.

Terms

    a(0) =1a(1) =15a(2) =192a(3) =2415a(4) =30305a(5) =380160a(6) =4768673a(7) =59817135a(8) =750331584a(9) =9411975375a(10) =118061508289

External references