Number of nX4 0..1 arrays with every element unequal to 1, 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A318094
Number of nX4 0..1 arrays with every element unequal to 1, 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =2a(1) =50a(2) =220a(3) =1563a(4) =9193a(5) =57744a(6) =356786a(7) =2215533a(8) =13752047a(9) =85343361a(10) =529807380a(11) =3288466317a(12) =20413201710a(13) =126710229626a(14) =786538847475
External references
- oeis: A318094