0,5
WikipediaElenco di politopi regolari.
a(8)=4 because there are the octagon, the octahedron, the tesseract and the 7-dimensional simplex.
Sequence in context: A083901 A038148 A141829 this_sequence A083902 A106491 A073184
Adjacent sequences: A111333 A111334 A111335 this_sequence A111337 A111338 A111339
nonn
Paulo de A. Sachs (sachs6(AT)yahoo.de), Nov 09 2005
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