Number of commutation classes of reduced words for the longest element of a Weyl group of type D_n.
A180607
Number of commutation classes of reduced words for the longest element of a Weyl group of type D_n.
Terms
- a(0) =1a(1) =1a(2) =8a(3) =182a(4) =13198a(5) =3031856a(6) =2198620478
External references
- oeis: A180607