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

A147443

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

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =13a(6) =23a(7) =73a(8) =316a(9) =1171a(10) =5078a(11) =33627a(12) =212172a(13) =2092051a(14) =17868818a(15) =243014937a(16) =3050949895a(17) =53472938233

External references