Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 0100-1111-0010 pattern in any orientation.
A146371
Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 0100-1111-0010 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =3a(7) =13a(8) =25a(9) =41a(10) =95a(11) =287a(12) =1007a(13) =4035a(14) =15127a(15) =64629a(16) =303257a(17) =1705229a(18) =10297463a(19) =68501897a(20) =489679427a(21) =4005352321a(22) =35909136431a(23) =368495419925
External references
- oeis: A146371