Number of nX4 0..3 arrays with exactly floor(nX4/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order.
A222790
Number of nX4 0..3 arrays with exactly floor(nX4/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order.
Terms
- a(0) =3a(1) =18a(2) =275a(3) =5896a(4) =137804a(5) =3315998a(6) =80934417a(7) =1992934141a(8) =49390328481
External references
- oeis: A222790