Number of (n+1)X(3+1) 0..2 arrays with 2X2 edge jumps all no more than +1 in one of the clockwise or counterclockwise directions or both.

A235218

Number of (n+1)X(3+1) 0..2 arrays with 2X2 edge jumps all no more than +1 in one of the clockwise or counterclockwise directions or both.

Terms

    a(0) =3037a(1) =145669a(2) =6630699a(3) =306034401a(4) =14077755879a(5) =648127851943

External references