Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A320408
Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =64a(1) =700a(2) =7049a(3) =92578a(4) =1353623a(5) =19677729a(6) =282206549a(7) =4085687781a(8) =58997871413a(9) =854291464126
External references
- oeis: A320408