Number of n X 4 arrays with rows being permutations of 0..3 and no column j greater than column j-1 in all rows.
A212851
Number of n X 4 arrays with rows being permutations of 0..3 and no column j greater than column j-1 in all rows.
Terms
- a(0) =1a(1) =211a(2) =8983a(3) =271375a(4) =7225951a(5) =182199871a(6) =4479288703a(7) =108787179775
External references
- oeis: A212851