922110domain: NAppears in sequencesDefine the generalized Pisot sequence T(a(0),a(1)) by: a(n+2) is the greatest integer such that a(n+2)/a(n+1) < a(n+1)/a(n). This is T(3,6).at n=22A018918Pisot sequences E(6,8), P(6,8).at n=42A020716Expansion of 1/((1-2*x+x^2-x^3)*(1-x)).at n=23A077855