Number of nX3 0..3 arrays with no more than floor(nX3/2) elements equal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..3 order.
A222826
Number of nX3 0..3 arrays with no more than floor(nX3/2) elements equal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..3 order.
Terms
- a(0) =2a(1) =80a(2) =2695a(3) =163059a(4) =4990235a(5) =324288311a(6) =10170499564a(7) =674288738013
External references
- oeis: A222826