Number of n X n 0..6 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors.
A203382
Number of n X n 0..6 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors.
Terms
- a(0) =1a(1) =7a(2) =2422a(3) =7951793a(4) =307215779816
External references
- oeis: A203382