Number of pairs in the Bruhat order of type A_n.
A383875
Number of pairs in the Bruhat order of type A_n.
Terms
- a(0) =1a(1) =3a(2) =19a(3) =213a(4) =3781a(5) =98407a(6) =3550919
External references
- oeis: A383875
A383875
Number of pairs in the Bruhat order of type A_n.