63182domain: NAppears in sequencesThe hyper-Wiener index of the zig-zag polyhex nanotube TUHC_6[2n,2] defined pictorially in Fig. 1 of the Eliasi et al. reference.at n=12A227704a(n) = Sum_{d|n} max(d, n/d)^3.at n=29A297842