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Search: id:A117220
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| A117220 |
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Number of partitions of 3-smooth numbers into parts not greater than 3. |
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+0
7
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| 1, 2, 3, 4, 7, 10, 12, 19, 30, 37, 61, 75, 102, 127, 217, 271, 374, 469, 588, 817, 1027, 1430, 1801, 2269, 3169, 3997, 5043, 5590, 7057, 8911, 12481, 15769, 19927, 22102, 27937, 35317, 44652, 49537, 62641, 79219, 87894, 111169, 140617, 177877, 197377
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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a(n) = A001399(A003586(n)).
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EXAMPLE
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a(9) = #{3+3+3, 3+3+2+1, 3+3+1+1+1, 3+2+2+2, 3+2+2+1+1,
3+2+1*[4],
3+1*[6],2+2+2+2+1, 2+2+2+1+1+1, 2+2+1*[4], 2+1*[7], 1*[9]} =
12.
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CROSSREFS
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Cf. A117221, A117222, A090184.
Sequence in context: A135419 A051914 A104519 this_sequence A118426 A105330 A097545
Adjacent sequences: A117217 A117218 A117219 this_sequence A117221 A117222 A117223
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KEYWORD
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nonn
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AUTHOR
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Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), Mar 04 2006
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