Number of n X 3 nonnegative integer arrays with new values 0 upwards introduced in row major order and every value unique in its row and column.
A211708
Number of n X 3 nonnegative integer arrays with new values 0 upwards introduced in row major order and every value unique in its row and column.
Terms
- a(0) =1a(1) =18a(2) =588a(3) =30240a(4) =2277600a(5) =234440280a(6) =31448589480
External references
- oeis: A211708