Number of nX6 0..1 arrays with every element equal to 1, 2, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A303408
Number of nX6 0..1 arrays with every element equal to 1, 2, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =5a(1) =45a(2) =290a(3) =2079a(4) =29411a(5) =236326a(6) =2158662a(7) =27002794a(8) =250400003a(9) =2506366395a(10) =27764556264a(11) =275534182736
External references
- oeis: A303408