Number of ways to reciprocally link elements of an nX5 array either to themselves or to exactly two horizontal, diagonal and antidiagonal neighbors, without consecutive collinear links.
A220735
Number of ways to reciprocally link elements of an nX5 array either to themselves or to exactly two horizontal, diagonal and antidiagonal neighbors, without consecutive collinear links.
Terms
- a(0) =1a(1) =32a(2) =487a(3) =7369a(4) =127288a(5) =2027456a(6) =32924133a(7) =534490260a(8) =8661108365a(9) =140500900684
External references
- oeis: A220735