Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 111-110-111 pattern in any orientation.
A146283
Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 111-110-111 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =5a(6) =13a(7) =25a(8) =59a(9) =333a(10) =1935a(11) =9121a(12) =45829a(13) =402153a(14) =4332077a(15) =45059163a(16) =497321737a(17) =7788926343a(18) =155218822227
External references
- oeis: A146283