36496595656domain: NAppears in sequencesExpansion of series reversion of x * (1 - 9*x) / (1 - x).at n=9A131927a(n) = [x^n] 1/(1 - n*x/(1 - x - n*x/(1 - x - n*x/(1 - x - n*x/(1 - x - n*x/(1 - ...)))))), a continued fraction.at n=8A304936