Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 4, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A301485
Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 4, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =7a(2) =52a(3) =599a(4) =15124a(5) =903707a(6) =116648010a(7) =34593556316
External references
- oeis: A301485