Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 0010-1010-1111 pattern in any orientation.
A146778
Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 0010-1010-1111 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =5a(6) =17a(7) =43a(8) =145a(9) =633a(10) =4131a(11) =31831a(12) =267243a(13) =2665825a(14) =33726547a(15) =521722083a(16) =9834245987a(17) =228276099483
External references
- oeis: A146778