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Search: id:A004129
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| A004129 |
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Number of solutions to postage stamp problem.
(Formerly M2525)
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+0
1
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| 1, 3, 6, 9, 13, 17, 22, 27, 33, 40, 47, 56, 65
(list; graph; listen)
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OFFSET
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2,2
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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).
R. L. Graham and N. J. A. Sloane, On Additive Bases and Harmonious Graphs, SIAM J. Algebraic and Discrete Methods, 1 (1980), 382-404.
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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.
R. L. Graham and N. J. A. Sloane, On Additive Bases and Harmonious Graphs
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MAPLE
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A004129:=(z**4+z**3+2*z**2+2*z+1)*(z**2+z+1)/(z-1)/(z**5+z**4+z**3-z-1); [Conjectured by S. Plouffe in his 1992 dissertation.]
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CROSSREFS
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Sequence in context: A025205 A024190 A004116 this_sequence A004137 A080060 A004131
Adjacent sequences: A004126 A004127 A004128 this_sequence A004130 A004131 A004132
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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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