Number of 3 X n arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without 2-loops.
A221115
Number of 3 X n arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without 2-loops.
Terms
- a(0) =0a(1) =0a(2) =8a(3) =178a(4) =2952a(5) =45842a(6) =693362a(7) =10369358a(8) =154285828a(9) =2290284810a(10) =33961683620a(11) =503356596054
External references
- oeis: A221115