56668domain: NAppears in sequencesCoefficients of the expansion of:p(x,t)=(1 - x)/((1 - x*Exp[t*(1 - x)])*(1 - x*Exp[t*(1 + x)])).at n=49A168347Numbers k such that the last 9 digits of the k-th Lucas number are 1-9 pandigital.at n=17A216488