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A147787
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Number of partitions of n into parts divisible by 4,6 or 9.
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5
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1, 0, 0, 0, 1, 0, 1, 0, 2, 1, 1, 0, 4, 1, 2, 1, 6, 2, 6, 1, 9, 4, 8, 2, 17, 6, 13, 7, 23, 9, 24, 9, 35, 18, 34, 15, 58, 24, 51, 28, 80, 37, 84, 40, 115, 64, 116, 60, 175, 88, 168, 101, 239, 128, 258, 139, 335, 199, 352, 203, 487, 273, 494, 315, 656, 386, 714
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OFFSET
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0,9
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COMMENTS
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Also number of partitions of n with no part and no difference between two parts equal to 1,2,3,5,7 or 11.
Also number of partitions of n with no part appearing 1,2,3,5,7 or 11 times.
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LINKS
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FORMULA
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G.f.: Product_{k>=1} (1-x^(12k))(1-x^(18k))/(1-x^(4k))/(1-x^(6k))/(1-x^(9k)).
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MATHEMATICA
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nmax = 60; CoefficientList[Series[Product[(1 + x^(9*k))*(1 + x^(6*k))/(1 - x^(4*k)), {k, 1, nmax}], {x, 0, nmax}], x] (* Vaclav Kotesovec, Sep 23 2015 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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Alexander E. Holroyd (holroyd at math.ubc.ca)
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STATUS
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approved
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