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Search: id:A160047
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| A160047 |
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Denominator of the Harary number for the cycle graph C_n. |
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+0
2
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| 1, 1, 1, 1, 2, 1, 6, 3, 4, 6, 60, 5, 20, 10, 28, 35, 280, 140, 2520, 126, 120, 1260, 27720, 1155, 5544, 13860, 40040, 12870, 360360, 12012, 360360, 45045, 21840, 360360, 350064, 340340, 4084080, 2042040, 1989680, 1939938, 15519504, 369512, 5173168
(list; graph; listen)
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OFFSET
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1,5
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LINKS
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Eric Weisstein's World of Mathematics, Harary Index
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EXAMPLE
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0, 1, 3, 5, 15/2, 10, 77/6, 47/3, 75/4, 131/6, ...
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CROSSREFS
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Cf. A160046.
Sequence in context: A131449 A124443 A077172 this_sequence A097288 A100014 A062566
Adjacent sequences: A160044 A160045 A160046 this_sequence A160048 A160049 A160050
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KEYWORD
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nonn
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AUTHOR
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E. W. Weisstein (eric(AT)weisstein.com), Apr 30, 2009
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