-44560482149domain: ZAppears in sequencesExpansion of 2+(1-2*x)/(-1+2*x+x^2).at n=30A176981a(n+8)+34*a(n+4)+a(n)=0 with a(0)-a(7) as shown.at n=28A259860a(n+8)+34*a(n+4)+a(n)=0 with a(0)-a(7) as shown.at n=27A259861