225851433718domain: NAppears in sequencesExpansion of (2-6*x+4*x^2-x^3)/((1-x)*(1-3*x+x^2)).at n=28A052925a(n) = Fibonacci(4n) + 1, or Fibonacci(2n-1)*Lucas(2n+1).at n=14A081002a(n) = F(n)*L(n+2) where F=Fibonacci and L=Lucas numbers.at n=27A128533