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Search: id:A052853
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| 0, 1, 2, 5, 14, 42, 138, 466, 1643, 5919, 21773, 81279, 307483, 1175352, 4534161, 17626999, 68992703, 271641249, 1075144364, 4275274867, 17071822275
(list; graph; listen)
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OFFSET
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0,3
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LINKS
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INRIA Algorithms Project, Encyclopedia of Combinatorial Structures 821
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MAPLE
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spec := [S, {C=Prod(Z, B), S=Cycle(C), B=Set(S)}, unlabeled]: seq(combstruct[count](spec, size=n), n=0..20);
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CROSSREFS
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Sequence in context: A061815 A129086 A035052 this_sequence A000751 A000744 A047046
Adjacent sequences: A052850 A052851 A052852 this_sequence A052854 A052855 A052856
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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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Search completed in 0.002 seconds
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