Number of 2n X 3 0..2 arrays with values 0..2 introduced in row major order, the number of instances of each value within one of each other, and every element equal to exactly one horizontal or vertical neighbor.
A199259
Number of 2n X 3 0..2 arrays with values 0..2 introduced in row major order, the number of instances of each value within one of each other, and every element equal to exactly one horizontal or vertical neighbor.
Terms
- a(0) =3a(1) =18a(2) =114a(3) =713a(4) =4508a(5) =28652a(6) =183442a(7) =1182513a(8) =7674706a(9) =50149664a(10) =329879020a(11) =2183961009a(12) =14549033194a(13) =97499792198a(14) =657083735088
External references
- oeis: A199259