Number of 4 X n 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 two less than the number of 0's adjacent to some 1.
A293103
Number of 4 X n 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 two less than the number of 0's adjacent to some 1.
Terms
- a(0) =0a(1) =30a(2) =554a(3) =8088a(4) =114318a(5) =1676740a(6) =24773296a(7) =370085158a(8) =5573917456a(9) =84505086146
External references
- oeis: A293103