Number of ways to reciprocally link elements of an 7Xn array either to themselves or to exactly one horizontal, diagonal and antidiagonal neighbor.

A220626

Number of ways to reciprocally link elements of an 7Xn array either to themselves or to exactly one horizontal, diagonal and antidiagonal neighbor.

Terms

    a(0) =1a(1) =2356a(2) =172833a(3) =49406943a(4) =8011414792

External references