Number of 3Xn 0..2 arrays with exactly floor(3Xn/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order.
A223106
Number of 3Xn 0..2 arrays with exactly floor(3Xn/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order.
Terms
- a(0) =0a(1) =16a(2) =546a(3) =12330a(4) =198848a(5) =5010580a(6) =82588214a(7) =2138049675a(8) =35334863577a(9) =934309083086
External references
- oeis: A223106