Number of nX4 0..1 arrays with every element equal to 0, 1, 2 or 3 horizontally or antidiagonally adjacent elements, with upper left element zero.
A302006
Number of nX4 0..1 arrays with every element equal to 0, 1, 2 or 3 horizontally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =8a(1) =128a(2) =1808a(3) =25808a(4) =368144a(5) =5251712a(6) =74917424a(7) =1068722240a(8) =15245681888a(9) =217484775440
External references
- oeis: A302006