Number of nX4 0..3 arrays with no more than floor(nX4/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order.
A222902
Number of nX4 0..3 arrays with no more than 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) =4a(1) =25a(2) =373a(3) =7794a(4) =180203a(5) =4320431a(6) =105327353a(7) =2592612272a(8) =64243363904
External references
- oeis: A222902