201326580domain: NAppears in sequencesNumber of reduced words of length n in Coxeter group on 3 generators S_i with relations (S_i)^2 = (S_i S_j)^26 = I.at n=27A169112a(n) = sigma(n*2^n).at n=21A176311Number of additive Z_2 Z_8 codes of a certain type (see Siap-Aydogdu for precise definition).at n=22A226264