Number of n X n 0..2 arrays avoiding 11 horizontally, 22 vertically and 00 antidiagonally.
A229365
Number of n X n 0..2 arrays avoiding 11 horizontally, 22 vertically and 00 antidiagonally.
Terms
- a(0) =3a(1) =38a(2) =1610a(3) =222990a(4) =104382552a(5) =162794962814
External references
- oeis: A229365