Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 11011-01110-00100 pattern in any orientation.

A147488

Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 11011-01110-00100 pattern in any orientation.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =5a(6) =20a(7) =49a(8) =167a(9) =643a(10) =3053a(11) =16577a(12) =118904a(13) =896633a(14) =8867027a(15) =91561000a(16) =1224859380a(17) =17454229913

External references