Number of nX5 0..1 arrays with every element unequal to 1, 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A318427
Number of nX5 0..1 arrays with every element unequal to 1, 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =3a(1) =160a(2) =417a(3) =3999a(4) =19645a(5) =132039a(6) =774731a(7) =4831925a(8) =29346956a(9) =180397992a(10) =1102772445a(11) =6762537311a(12) =41387557425a(13) =253614074287
External references
- oeis: A318427