140531domain: NAppears in sequencesa(n)= -a(n-1) +5*a(n-2) +5*a(n-3) -a(n-4) -a(n-5).at n=17A107402Expansion of (1/x) * Series_Reversion( x / (1 + x + x^3 * (1 + x)^2) ).at n=13A389131