Number of (n+4)X(n+4) binary arrays with every 1 having exactly three king-move neighbors equal to 1 but with no 2X2 blocks of 1s.
A183457
Number of (n+4)X(n+4) binary arrays with every 1 having exactly three king-move neighbors equal to 1 but with no 2X2 blocks of 1s.
Terms
- a(0) =1a(1) =3a(2) =32a(3) =199a(4) =8702a(5) =248303a(6) =15282749a(7) =2019698992a(8) =349874591303
External references
- oeis: A183457