90686domain: NAppears in sequencesNumber of reduced words of length n in the Weyl group B_37.at n=4A162165Number of reduced words of length n in the Weyl group D_37.at n=4A162389Number of alternating permutations on 2n letters that avoid a certain pattern of length 4 (see Lewis, 2012, Appendix, for precise definition).at n=5A217809