Number of n X n 0..2 arrays with antidiagonals unimodal and rows and diagonals nondecreasing.
A223993
Number of n X n 0..2 arrays with antidiagonals unimodal and rows and diagonals nondecreasing.
Terms
- a(0) =3a(1) =31a(2) =476a(3) =7927a(4) =132119a(5) =2160036a(6) =34534687a(7) =540957770a(8) =8329684774a(9) =126518474741
External references
- oeis: A223993