1/8 the number of nX5 0..7 arrays with every element equal to exactly one or two of its horizontal and vertical neighbors.
A185902
1/8 the number of nX5 0..7 arrays with every element equal to exactly one or two of its horizontal and vertical neighbors.
Terms
- a(0) =15a(1) =38731a(2) =28967421a(3) =32611077940
External references
- oeis: A185902