Number of nX3 0..2 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..2 order.
A223145
Number of nX3 0..2 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..2 order.
Terms
- a(0) =2a(1) =31a(2) =211a(3) =4065a(4) =23376a(5) =487176a(6) =2859044a(7) =61675900a(8) =371133369a(9) =8139180914a(10) =49841557459
External references
- oeis: A223145