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Search: id:A132381
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| A132381 |
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Number of partitions of n with excactly one prime number. |
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+0
1
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| 0, 1, 2, 3, 4, 7, 9, 12, 15, 22, 28, 38, 46, 62, 77, 98, 117, 152, 183, 230, 275, 344, 408, 504, 592, 726, 856, 1038, 1212, 1469, 1712, 2048, 2380, 2839, 3288, 3901, 4500, 5313, 6127, 7193, 8254, 9671, 11081, 12909, 14764, 17153, 19566, 22658, 25786, 29762
(list; graph; listen)
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OFFSET
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1,3
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EXAMPLE
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a(10) = #{8+2, 7+1+1+1, 6+3+1, 6+2+2, 6+2+1+1, 5+5, 5+4+1,
5+1+1+1+1+1, 4+4+2, 4+3+3, 4+3+1+1+1, 4+2+2+2, 4+2+2+1+1,
4+2+1+1+1+1, 3+3+3+1, 3+3+1+1+1+1, 3+1+1+1+1+1+1+1,
2+2+2+2+2, 2+2+2+2+1+1, 2+2+2+1+1+1+1, 2+2+1+1+1+1+1+1,
2+1+1+1+1+1+1+1+1} = 22.
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CROSSREFS
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Cf. A002095.
Sequence in context: A023546 A084913 A117450 this_sequence A073152 A051061 A005576
Adjacent sequences: A132378 A132379 A132380 this_sequence A132382 A132383 A132384
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KEYWORD
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nonn
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AUTHOR
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Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Nov 10 2007
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