Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 01010-11111-00100 pattern in any orientation.

A147352

Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 01010-11111-00100 pattern in any orientation.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =9a(6) =13a(7) =35a(8) =115a(9) =509a(10) =1869a(11) =11373a(12) =63633a(13) =550775a(14) =4084072a(15) =49640647a(16) =508023623a(17) =8372503581

External references