Number of nX4 0..2 arrays with no more than floor(nX4/2) elements equal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..2 order.
A222851
Number of nX4 0..2 arrays with no more than floor(nX4/2) elements equal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..2 order.
Terms
- a(0) =10a(1) =391a(2) =19446a(3) =1020085a(4) =54792022a(5) =2987881000a(6) =164730750373
External references
- oeis: A222851