25756domain: NAppears in sequencesa(n) = 101*2^(n-1) - 100.at n=8A140062The Wiener index of the fullerenyl anion G[n]C[60], defined pictorially in the Arezoomand reference (see Fig. 5).at n=1A221016Numbers n such that sigma(n) is a Fibonacci number.at n=18A272412