Number of 3Xn 0..2 arrays with exactly floor(3Xn/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..2 order.
A222490
Number of 3Xn 0..2 arrays with exactly floor(3Xn/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..2 order.
Terms
- a(0) =0a(1) =4a(2) =6a(3) =33a(4) =75a(5) =968a(6) =2408a(7) =31222a(8) =77802a(9) =980380a(10) =2576182a(11) =31135264a(12) =86474880a(13) =997925136a(14) =2901220154a(15) =32253476486a(16) =97164153940
External references
- oeis: A222490