Number of nX3 0..2 arrays with exactly floor(nX3/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order.
A222685
Number of nX3 0..2 arrays with exactly floor(nX3/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order.
Terms
- a(0) =0a(1) =4a(2) =32a(3) =420a(4) =2050a(5) =32296a(6) =159672a(7) =2593768a(8) =13108760a(9) =215573760a(10) =1103125848a(11) =18291819408a(12) =94349236032
External references
- oeis: A222685