224040domain: NAppears in sequencesRamanujan's approximation to population of x^2 + y^2 <= 2^n.at n=20A000691a(n) = 8000*n + 40.at n=27A157663Number of reduced words of length n in Coxeter group on 6 generators S_i with relations (S_i)^2 = (S_i S_j)^3 = I.at n=8A162743