Number of 4 X n 0..3 arrays with exactly floor(4 X n/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order.
A222797
Number of 4 X n 0..3 arrays with exactly floor(4 X n/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order.
Terms
- a(0) =0a(1) =55a(2) =582a(3) =5896a(4) =77978a(5) =1026076a(6) =16057219a(7) =270356931a(8) =4839768207a(9) =87744222973
External references
- oeis: A222797