Number of nX5 0..1 arrays with every element unequal to 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.
A305220
Number of nX5 0..1 arrays with every element unequal to 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =0a(1) =18a(2) =31a(3) =170a(4) =792a(5) =3759a(6) =18876a(7) =90956a(8) =474685a(9) =2426611a(10) =12314640a(11) =63224089a(12) =324415176a(13) =1661929097a(14) =8516748514a(15) =43702916079a(16) =224090240059
External references
- oeis: A305220