Equals two maps: number of 7Xn binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..1 7Xn array.

A220334

Equals two maps: number of 7Xn binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..1 7Xn array.

Terms

    a(0) =1a(1) =1081a(2) =84196a(3) =10004541a(4) =1026529800a(5) =119808040854

External references