Number of n X n 0..1 arrays with each 1 adjacent to 0, 1 or 3 king-move neighboring 1's.

A296644

Number of n X n 0..1 arrays with each 1 adjacent to 0, 1 or 3 king-move neighboring 1's.

Terms

    a(0) =2a(1) =12a(2) =111a(3) =3159a(4) =212537a(5) =29547816a(6) =10730354337

External references