Number of n X n 0..1 arrays with every element equal to 1, 2, 3, 6 or 7 king-move adjacent elements, with upper left element zero.
A298649
Number of n X n 0..1 arrays with every element equal to 1, 2, 3, 6 or 7 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =0a(1) =4a(2) =48a(3) =466a(4) =5124a(5) =75562a(6) =1277500a(7) =30337435a(8) =1060912744a(9) =50167771709
External references
- oeis: A298649