Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 0100-1100-0111-0010 pattern in any orientation.
A147048
Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 0100-1100-0111-0010 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =3a(9) =3a(10) =5a(11) =5a(12) =13a(13) =13a(14) =29a(15) =29a(16) =101a(17) =101a(18) =469a(19) =469a(20) =2569a(21) =2569a(22) =14457a(23) =14457a(24) =96029a(25) =96029a(26) =884501a(27) =884501a(28) =9747473
External references
- oeis: A147048