Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,3,2,1,2 for x=0,1,2,3,4.
A197241
Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,3,2,1,2 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =73a(2) =1637a(3) =32754a(4) =750414a(5) =16248436a(6) =352842084a(7) =7724652441a(8) =168523962450
External references
- oeis: A197241