Number of 2nX6 0..2 arrays with values 0..2 introduced in row major order and each element equal to exactly one horizontal or vertical neighbor.
A198530
Number of 2nX6 0..2 arrays with values 0..2 introduced in row major order and each element equal to exactly one horizontal or vertical neighbor.
Terms
- a(0) =76a(1) =3838a(2) =213328a(3) =12510524a(4) =757941274a(5) =46796529288
External references
- oeis: A198530