Number of n X n 0..1 arrays with every element equal to 1, 2 or 3 king-move adjacent elements, with upper left element zero.
A297816
Number of n X n 0..1 arrays with every element equal to 1, 2 or 3 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =0a(1) =4a(2) =48a(3) =466a(4) =4444a(5) =46701a(6) =467104a(7) =4833331a(8) =52153064a(9) =578390147a(10) =6590059758a(11) =79294094586
External references
- oeis: A297816