Number of 3Xn arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, without 2-loops or left turns.
A221892
Number of 3Xn arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, without 2-loops or left turns.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =202a(4) =2722a(5) =31881a(6) =416630a(7) =5496803a(8) =71900708a(9) =940934266a(10) =12320347932a(11) =161293030438
External references
- oeis: A221892