Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1000-1111-0010 pattern in any orientation.

A146400

Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1000-1111-0010 pattern in any orientation.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =7a(6) =21a(7) =51a(8) =261a(9) =1539a(10) =11759a(11) =111585a(12) =1296125a(13) =18399415a(14) =335874781a(15) =7824897067a(16) =229077144211

External references