Number of n X n 0..1 arrays with rows nondecreasing and antidiagonals unimodal.
A224127
Number of n X n 0..1 arrays with rows nondecreasing and antidiagonals unimodal.
Terms
- a(0) =2a(1) =9a(2) =58a(3) =419a(4) =3149a(5) =24095a(6) =186348a(7) =1452236a(8) =11385356a(9) =89697284a(10) =709549769a(11) =5632222541a(12) =44837998135a(13) =357848802839
External references
- oeis: A224127