Number of n X 8 0..3 arrays with values 0..3 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.

A199091

Number of n X 8 0..3 arrays with values 0..3 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) =1a(1) =709a(2) =24353a(3) =5471810a(4) =349276385a(5) =59171718202

External references