Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 0100-1100-1111 pattern in any orientation.
A146786
Number of n X n binary arrays symmetric about main diagonal 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) =3a(5) =9a(6) =27a(7) =85a(8) =337a(9) =1791a(10) =13253a(11) =115267a(12) =1169733a(13) =14374957a(14) =216583105a(15) =4102635811a(16) =98419728413
External references
- oeis: A146786