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Search: id:A114098
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| A114098 |
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Number of partitions of n into parts that are distinct mod 9. |
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+0
1
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| 1, 1, 2, 2, 3, 4, 5, 6, 8, 10, 11, 15, 16, 20, 25, 28, 32, 39, 46, 50, 62, 66, 78, 93, 101, 112, 132, 150, 161, 192, 202, 232, 268, 287, 312, 361, 400, 425, 497, 516, 582, 658, 698, 748, 858, 932, 982, 1135, 1164, 1296
(list; graph; listen)
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OFFSET
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1,3
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EXAMPLE
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a(7)=5 because there are 5 such partition of 7: {7}, {1,6}, {2,5}, {3,4}, {4,2,1}.
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MATHEMATICA
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<< DiscreteMath`Combinatorica`; np[n_]:= Length@Select[Mod[ #, 9]& /@ Partitions[n], (Length@# != Length@Union@#)&]; lst = Array[np, 50]
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CROSSREFS
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Sequence in context: A109950 A008674 A067596 this_sequence A034141 A055002 A114097
Adjacent sequences: A114095 A114096 A114097 this_sequence A114099 A114100 A114101
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KEYWORD
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nonn
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AUTHOR
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Giovanni Resta (g.resta(AT)iit.cnr.it), Feb 06 2006
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