Number of n X n 0..1 arrays with every element unequal to 0, 1, 5 or 8 king-move adjacent elements, with upper left element zero.
A304264
Number of n X n 0..1 arrays with every element unequal to 0, 1, 5 or 8 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =1a(2) =6a(3) =21a(4) =146a(5) =1246a(6) =13767a(7) =252509a(8) =5755625a(9) =177353720a(10) =8354131403a(11) =523250794396
External references
- oeis: A304264