Number of ways to reciprocally link elements of an n X n array either to themselves or to exactly two horizontal and antidiagonal neighbors, without consecutive collinear links.
A220704
Number of ways to reciprocally link elements of an n X n array either to themselves or to exactly two horizontal and antidiagonal neighbors, without consecutive collinear links.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =13a(4) =107a(5) =1617a(6) =44976a(7) =2282408a(8) =216083336a(9) =37166744488
External references
- oeis: A220704