Number of nX3 0..2 arrays with values 0..2 introduced in row major order and each element equal to one or two horizontal and vertical neighbors.
A199642
Number of nX3 0..2 arrays with values 0..2 introduced in row major order and each element equal to one or two horizontal and vertical neighbors.
Terms
- a(0) =1a(1) =13a(2) =112a(3) =1265a(4) =12748a(5) =134748a(6) =1396083a(7) =14584050a(8) =151837464a(9) =1582988477a(10) =16494233432a(11) =171904221068
External references
- oeis: A199642