Number of n X n binary arrays with all ones connected only in a tee 1,1 1,2 1,3 2,2 in any orientation.

A145925

Number of n X n binary arrays with all ones connected only in a tee 1,1 1,2 1,3 2,2 in any orientation.

Terms

    a(0) =1a(1) =1a(2) =9a(3) =33a(4) =404a(5) =7941a(6) =262632a(7) =14831415a(8) =1538127410a(9) =275592188347

External references