Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1100-0110-0011 pattern in any orientation.

A146452

Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1100-0110-0011 pattern in any orientation.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =5a(5) =13a(6) =37a(7) =161a(8) =805a(9) =4895a(10) =32839a(11) =307077a(12) =3448973a(13) =48418161a(14) =832120215a(15) =18174765257

External references