Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 0100-1100-1111 pattern in any orientation.
A146790
Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 0100-1100-1111 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =5a(5) =17a(6) =67a(7) =311a(8) =1473a(9) =7613a(10) =68761a(11) =661093a(12) =8801627a(13) =124939017a(14) =2484498069a(15) =53077957657
External references
- oeis: A146790