Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 0110-1111-0100 pattern in any orientation.
A146589
Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 0110-1111-0100 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =9a(6) =25a(7) =67a(8) =353a(9) =1577a(10) =17635a(11) =202483a(12) =2019113a(13) =31077783a(14) =570196985a(15) =14569116993a(16) =519350763601
External references
- oeis: A146589