Number of nX5 0..3 arrays with exactly floor(nX5/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..3 order.
A222663
Number of nX5 0..3 arrays with exactly floor(nX5/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..3 order.
Terms
- a(0) =4a(1) =26a(2) =110a(3) =4241a(4) =45666a(5) =2169240a(6) =33001473a(7) =2076266347a(8) =33923371172
External references
- oeis: A222663