Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 11000-01100-00110-00011 pattern in any orientation.
A147451
Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 11000-01100-00110-00011 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =5a(6) =13a(7) =25a(8) =101a(9) =375a(10) =1753a(11) =9905a(12) =61267a(13) =438109a(14) =3882461a(15) =41001981a(16) =504280659
External references
- oeis: A147451