Number of n X 4 0..1 arrays with every element unequal to 0, 1, 2, 4 or 7 king-move adjacent elements, with upper left element zero.
A304844
Number of n X 4 0..1 arrays with every element unequal to 0, 1, 2, 4 or 7 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =8a(1) =24a(2) =51a(3) =132a(4) =502a(5) =1638a(6) =4816a(7) =15697a(8) =51711a(9) =162366a(10) =515716a(11) =1666971a(12) =5329280a(13) =16966976a(14) =54361108a(15) =174123735a(16) =556206198a(17) =1778536970a(18) =5692126701a(19) =18203527304a(20) =58206977546a(21) =186193045751a(22) =595556243811
External references
- oeis: A304844