Number of n X n 0..1 arrays with every element equal to 0, 1, 3 or 4 king-move adjacent elements, with upper left element zero.
A297900
Number of n X n 0..1 arrays with every element equal to 0, 1, 3 or 4 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =4a(2) =1a(3) =37a(4) =281a(5) =257a(6) =23911a(7) =1367645a(8) =10485521a(9) =4553534006
External references
- oeis: A297900