Number of n X n 0..1 arrays with every element equal to 1, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero.
A298828
Number of n X n 0..1 arrays with every element equal to 1, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =0a(1) =4a(2) =1a(3) =68a(4) =1590a(5) =16551a(6) =5097700a(7) =2031564141
External references
- oeis: A298828