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Search: id:A052818
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| 0, 1, 1, 3, 10, 37, 144, 593, 2515, 10975, 48847, 221071, 1013886, 4702530, 22017327, 103925505, 494000139, 2362666375, 11361442399, 54898445359, 266417109839
(list; graph; listen)
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OFFSET
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0,4
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LINKS
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INRIA Algorithms Project, Encyclopedia of Combinatorial Structures 783
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MAPLE
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spec := [S, {C=Sequence(B), B=Cycle(S), S=Prod(C, Z)}, unlabeled]: seq(combstruct[count](spec, size=n), n=0..20);
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CROSSREFS
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Sequence in context: A105284 A119244 A052893 this_sequence A109081 A046632 A063029
Adjacent sequences: A052815 A052816 A052817 this_sequence A052819 A052820 A052821
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KEYWORD
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easy,nonn
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AUTHOR
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encyclopedia(AT)pommard.inria.fr, Jan 25 2000
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