Number of n X n 0..1 arrays with every element unequal to 0, 1, 3 or 6 king-move adjacent elements, with upper left element zero.
A304127
Number of n X n 0..1 arrays with every element unequal to 0, 1, 3 or 6 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =5a(2) =9a(3) =44a(4) =176a(5) =651a(6) =2945a(7) =14708a(8) =79188a(9) =495071a(10) =3628565a(11) =29134749a(12) =265855219a(13) =2732640025a(14) =30998016185a(15) =398665350465
External references
- oeis: A304127