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Search: id:A005410
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| A005410 |
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From interval orders.
(Formerly M0435)
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+0
1
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| 1, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 9, 10
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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The g.f. -(-1-z+z**3)/(1+z)/(z-1)**2 conjectured by S. Plouffe in his 1992 dissertation is wrong.
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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
Fishburn, Peter C.; Maximum semiorders in interval orders. SIAM J. Algebraic Discrete Methods 2 (1981), no. 2, 127-135.
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LINKS
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S. Plouffe, Approximations de S\'{e}ries G\'{e}n\'{e}ratrices et Quelques Conjectures, Dissertation, Universit\'{e} du Qu\'{e}bec \`{a} Montr\'{e}al, 1992.
S. Plouffe, 1031 Generating Functions and Conjectures, Universit\'{e} du Qu\'{e}bec \`{a} Montr\'{e}al, 1992.
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CROSSREFS
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Sequence in context: A030581 A113609 A067086 this_sequence A120835 A091374 A065603
Adjacent sequences: A005407 A005408 A005409 this_sequence A005411 A005412 A005413
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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