Number of n X n 0..1 arrays with every element equal to 0, 1, 2 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A302617
Number of n X n 0..1 arrays with every element equal to 0, 1, 2 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =8a(2) =25a(3) =130a(4) =896a(5) =9015a(6) =159831a(7) =5004858a(8) =294788397a(9) =30176400734
External references
- oeis: A302617