Number of nXn 0..1 arrays with every element unequal to 0, 1, 2, 7 or 8 king-move adjacent elements, with upper left element zero.
A305580
Number of nXn 0..1 arrays with every element unequal to 0, 1, 2, 7 or 8 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =4a(2) =6a(3) =15a(4) =76a(5) =1897a(6) =50618a(7) =1944635a(8) =206386330a(9) =39654762470
External references
- oeis: A305580