Number of n X 5 arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor, with every occupancy equal to zero or two.
A221416
Number of n X 5 arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor, with every occupancy equal to zero or two.
Terms
- a(0) =0a(1) =84a(2) =0a(3) =17792a(4) =0a(5) =3813004a(6) =0a(7) =817415641a(8) =0a(9) =175230221888a(10) =0a(12) =0a(14) =0a(16) =0a(18) =0a(20) =0a(22) =0
External references
- oeis: A221416