Number of nX3 0..2 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor.
A202884
Number of nX3 0..2 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor.
Terms
- a(0) =9a(1) =265a(2) =5493a(3) =109119a(4) =2223723a(5) =45332961a(6) =922352267a(7) =18770352883a(8) =382034229103
External references
- oeis: A202884