Number of nX3 0..n+3-2 arrays with each element differing from its horizontal and vertical neighbors by one or two.
A265453
Number of nX3 0..n+3-2 arrays with each element differing from its horizontal and vertical neighbors by one or two.
Terms
- a(0) =12a(1) =250a(2) =7422a(3) =216466a(4) =6056182a(5) =161435322a(6) =4148236142a(7) =103476193518
External references
- oeis: A265453