Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1101-0111-0010 pattern in any orientation.

A147246

Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1101-0111-0010 pattern in any orientation.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =5a(5) =21a(6) =67a(7) =345a(8) =1649a(9) =10337a(10) =85161a(11) =930265a(12) =12022615a(13) =198707417a(14) =3901444367

External references