162337domain: NAppears in sequencesNumber of reduced words of length n in the Weyl group A_9.at n=17A161457Number of reduced words of length n in the Weyl group A_9.at n=28A161457Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of e.g.f.: exp(k*((1+x)^k - 1)).at n=58A294118