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Search: id:A127174
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| A127174 |
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Numbers n of the form 3*k such that partition numbers of n is also of the form 3*k. |
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+0
2
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| 3, 9, 21, 24, 30, 33, 39, 48, 51, 57, 63, 75, 102, 111, 129, 138, 147, 162, 180, 189, 195, 198, 207, 222, 225, 231, 240, 249, 267, 270, 288, 297, 330, 336, 339, 342, 348, 351, 354, 357, 363, 369, 372, 381, 396, 399, 402, 405, 411, 429, 432, 465, 468, 477, 480
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Subset of A083214. Or, intersection of A083214 and A008585.
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MAPLE
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with(combinat): a:=proc(k): if numbpart(3*k) mod 3 = 0 then 3*k else fi end: seq(a(n), n=1..200); - Emeric Deutsch (deutsch(AT)duke.poly.edu), Apr 16 2007
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MATHEMATICA
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Select[Range[3, 600, 3], Mod[PartitionsP[ # ], 3]==0&]
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CROSSREFS
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Cf. A000041, A008585, A083214, A087183.
Sequence in context: A032668 A050839 A032640 this_sequence A044055 A029542 A014962
Adjacent sequences: A127171 A127172 A127173 this_sequence A127175 A127176 A127177
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KEYWORD
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nonn
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AUTHOR
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Zak Seidov (zakseidov(AT)yahoo.com), Apr 05 2007
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