Number of ways to reciprocally link elements of an nX6 array either to themselves or to exactly one horizontal, diagonal and antidiagonal neighbor.

A220619

Number of ways to reciprocally link elements of an nX6 array either to themselves or to exactly one horizontal, diagonal and antidiagonal neighbor.

Terms

    a(0) =13a(1) =1215a(2) =76955a(3) =5280827a(4) =356768525a(5) =24177895648

External references