Number of nX4 0..2 arrays with no more than floor(nX4/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..2 order.
A222584
Number of nX4 0..2 arrays with no more than floor(nX4/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..2 order.
Terms
- a(0) =4a(1) =18a(2) =112a(3) =1087a(4) =11442a(5) =128213a(6) =1471412a(7) =17068476a(8) =198654710a(9) =2328829654a(10) =27335961632a(11) =322535055233
External references
- oeis: A222584