Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1010-1111-0100 pattern in any orientation.

A146641

Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1010-1111-0100 pattern in any orientation.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =25a(6) =49a(7) =271a(8) =1415a(9) =7425a(10) =56853a(11) =745419a(12) =7546933a(13) =141434655a(14) =2375191029a(15) =64505224261

External references