Number of nX3 0..2 arrays avoiding the pattern z z+1 z in any row, column or nw-to-se diagonal.
A206952
Number of nX3 0..2 arrays avoiding the pattern z z+1 z in any row, column or nw-to-se diagonal.
Terms
- a(0) =25a(1) =625a(2) =11804a(3) =218637a(4) =4107593a(5) =77359677a(6) =1455935650a(7) =27394495918a(8) =515466231841
External references
- oeis: A206952