Number of nX5 arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, without 2-loops.
A221239
Number of nX5 arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, without 2-loops.
Terms
- a(0) =0a(1) =3913a(2) =2217402a(3) =1130617545a(4) =543708183481
External references
- oeis: A221239