-13330domain: ZAppears in sequencesExpansion of (1-x)/(1-x+2*x^2-x^3).at n=37A078019a(0)=-1, a(1)=0, a(2)=1, a(n) = a(n-1) - 2*a(n-2) + a(n-3).at n=39A141576a(n) = 3*a(n-1) - 2*a(n-2) - a(n-3), with a(0)=1, a(1)=3 and a(2)=7.at n=17A368205