Number of 2 X n arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, with no 2-loops and with no occupancy greater than 2.
A221401
Number of 2 X n arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, with no 2-loops and with no occupancy greater than 2.
Terms
- a(0) =0a(1) =1a(2) =6a(3) =56a(4) =324a(5) =2196a(6) =13328a(7) =83680a(8) =512752a(9) =3161248a(10) =19384848a(11) =118981520a(12) =729388016a(13) =4471790032a(14) =27407876144a(15) =167983235088
External references
- oeis: A221401