Number of n X n 0..1 arrays avoiding 0 0 1 and 0 1 1 horizontally and 0 0 1 and 1 0 0 vertically.
A207746
Number of n X n 0..1 arrays avoiding 0 0 1 and 0 1 1 horizontally and 0 0 1 and 1 0 0 vertically.
Terms
- a(0) =2a(1) =16a(2) =102a(3) =900a(4) =8778a(5) =104976a(6) =1341606a(7) =20115225a(8) =316615970a(9) =5707953601a(10) =106646250804
External references
- oeis: A207746