Number of n X n 0..1 arrays with rows unimodal and antidiagonals nondecreasing.
A224403
Number of n X n 0..1 arrays with rows unimodal and antidiagonals nondecreasing.
Terms
- a(0) =2a(1) =12a(2) =100a(3) =884a(4) =7812a(5) =68282a(6) =590254a(7) =5055858a(8) =42996954a(9) =363652198a(10) =3062704166a(11) =25711681080a(12) =215327121414
External references
- oeis: A224403