Number of n X n 0..1 arrays with every element equal to 2, 3 or 4 king-move adjacent elements, with upper left element zero.
A297859
Number of n X n 0..1 arrays with every element equal to 2, 3 or 4 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =0a(1) =1a(2) =4a(3) =15a(4) =2621a(5) =284344a(6) =76517448a(7) =58344517697
External references
- oeis: A297859