[seqfan] Re: Anyone have a 3-D "Ulam" spiral?

Frank Adams-watters franktaw at netscape.net
Wed Apr 28 22:46:15 CEST 2021

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The rhombic dodecahedron will also tile space. Is there a "Ulam" spiral on it, requiring face-to-face contact between adjacent terms??

Franklin T. Adams-Watters

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