88460domain: NAppears in sequencesNumber of chair-free Berge perfect graphs on n nodes.at n=9A123412Period of the n-th convergent to the continued fraction expansion of Pi.at n=8A236250Product_{n>=1} (1 + a(n)*x^n) = Sum_{n>=0} Bell(n)*x^n, where Bell = A000110.at n=9A353831