Number of n X 3 0..2 arrays with rows unimodal and antidiagonals nondecreasing.
A224369
Number of n X 3 0..2 arrays with rows unimodal and antidiagonals nondecreasing.
Terms
- a(0) =22a(1) =218a(2) =1838a(3) =15540a(4) =132236a(5) =1126072a(6) =9588028a(7) =81634704a(8) =695055928a(9) =5917866680a(10) =50386093544a(11) =428998916880
External references
- oeis: A224369