Number of n X n 0..1 arrays with every element equal to 0, 1 or 2 horizontally or antidiagonally adjacent elements, with upper left element zero.
A301835
Number of n X n 0..1 arrays with every element equal to 0, 1 or 2 horizontally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =8a(2) =139a(3) =5748a(4) =496085a(5) =97439921a(6) =41966406867
External references
- oeis: A301835