Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 0100-1110-0111-0010 pattern in any orientation.
A146912
Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 0100-1110-0111-0010 pattern in any orientation.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =3a(4) =5a(5) =9a(6) =19a(7) =57a(8) =217a(9) =857a(10) =3619a(11) =18707a(12) =117969a(13) =876253a(14) =7474981a(15) =73822321a(16) =851878121a(17) =11545709859a(18) =183325972139
External references
- oeis: A146912