71268domain: NAppears in sequencesNumber of fusenes with 26 hexagons, C_(2v) symmetry and containing n carbon atoms.at n=15A123662a(n) = Sum_{k=1..n} floor(n^3/k^3).at n=38A344675a(n) = n^4 + 14*n^3 + 63*n^2 + 98*n + 28.at n=13A346376a(n) = Sum_{k=0..n} binomial(n+k-1,k) * Stirling1(n,k) * k!.at n=6A382840