The cover image, designed by James Avery, shows a number of force field optimized 3D fullerene structures on a background 2D fullerene graph created with the computer program Fullerene. The code is written by P. Schwerdtfeger, L. Wirz, and J. Avery, who present its many features on page 1508. A database of fullerene graphs is provided up to C200. Larger fullerenes can be obtained through Goldberg–Coxeter transformations or through a generalized ring-spiral algorithm. The middle piece shows C1620 generated from C20 through four successive leapfrog transformations, and the background 2D graph is that of C4860.
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