-600318853926domain: ZAppears in sequencesExpansion of (1-x+sqrt(1-6x+x^2))/2 in powers of x.at n=19A085403Expansion of (1 + x + sqrt(1 - 6*x + x^2))/2 in powers of x.at n=19A086456First column of inverse of Delannoy triangle.at n=19A103137