Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1100-0111-0011 pattern in any orientation.

A147216

Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1100-0111-0011 pattern in any orientation.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =5a(5) =21a(6) =61a(7) =299a(8) =1693a(9) =11273a(10) =84165a(11) =889613a(12) =11762051a(13) =208288599a(14) =4127254537a(15) =109970171123

External references