Number of n X n 0..1 arrays with diagonals and rows unimodal and antidiagonals nondecreasing.
A224152
Number of n X n 0..1 arrays with diagonals and rows unimodal and antidiagonals nondecreasing.
Terms
- a(0) =2a(1) =12a(2) =89a(3) =574a(4) =3469a(5) =20065a(6) =114537a(7) =650819a(8) =3705824a(9) =21181267a(10) =121617211a(11) =701255335a(12) =4058735341a(13) =23565789117a(14) =137190976378a(15) =800437914689
External references
- oeis: A224152