Number of nX3 0..2 arrays avoiding the pattern z-2 z-1 z in any row or column.
A206695
Number of nX3 0..2 arrays avoiding the pattern z-2 z-1 z in any row or column.
Terms
- a(0) =26a(1) =676a(2) =15712a(3) =363465a(4) =8366690a(5) =192513201a(6) =4428597297a(7) =101873060353
External references
- oeis: A206695