Number of ways to move elements of an n X n X n triangular array to themselves or a neighbor, with no more than 2-1 elements moved to themselves.

A271678

Number of ways to move elements of an n X n X n triangular array to themselves or a neighbor, with no more than 2-1 elements moved to themselves.

Terms

    a(0) =1a(1) =5a(2) =22a(3) =532a(4) =19448a(5) =2249488a(6) =556148184a(7) =357523207792

External references