Number of n X n binary arrays with all ones connected only either four adjacent vertically or four adjacent horizontally.

A145789

Number of n X n binary arrays with all ones connected only either four adjacent vertically or four adjacent horizontally.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =15a(5) =89a(6) =904a(7) =10469a(8) =202299a(9) =6253788a(10) =295345323a(11) =20297903190

External references