16950573domain: NAppears in sequencesExpansion of (1-3x+x^2)/((1-2x)(1-4x+x^2)).at n=13A087946Expansion of (1 - x)^4/((1 - x)^6 + x^6).at n=26A307089Number of paths of length n starting at initial node of the path graph P_11.at n=27A336678