Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A300875
Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =7a(2) =52a(3) =589a(4) =12369a(5) =447946a(6) =33392871a(7) =5113575513
External references
- oeis: A300875