Number of nX6 0..3 arrays with rows nondecreasing and antidiagonals unimodal.
A224022
Number of nX6 0..3 arrays with rows nondecreasing and antidiagonals unimodal.
Terms
- a(0) =84a(1) =7056a(2) =387729a(3) =16861106a(4) =646270418a(5) =23151623729a(6) =800511624819
External references
- oeis: A224022