Number of n X n 0..1 arrays with each 1 adjacent to 1, 2 or 3 king-move neighboring 1's.

A296681

Number of n X n 0..1 arrays with each 1 adjacent to 1, 2 or 3 king-move neighboring 1's.

Terms

    a(0) =1a(1) =12a(2) =210a(3) =11478a(4) =2323514a(5) =1231267842

External references