Number of nX6 0..1 arrays with every element unequal to 0, 1, 2 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A318073
Number of nX6 0..1 arrays with every element unequal to 0, 1, 2 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =32a(1) =89a(2) =179a(3) =372a(4) =854a(5) =3029a(6) =9966a(7) =31057a(8) =102906a(9) =339938a(10) =1115341a(11) =3686471a(12) =12202268a(13) =40357737a(14) =133516203a(15) =442017482a(16) =1463416356a(17) =4844264732a(18) =16038582879a(19) =53104714108a(20) =175822278334a(21) =582142483984
External references
- oeis: A318073