Number of n X n 0..1 arrays with every element unequal to 0, 1, 2 or 7 king-move adjacent elements, with upper left element zero.
A304224
Number of n X n 0..1 arrays with every element unequal to 0, 1, 2 or 7 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =4a(2) =5a(3) =11a(4) =31a(5) =306a(6) =5541a(7) =82029a(8) =1842555a(9) =145751601a(10) =13209632311
External references
- oeis: A304224