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Search: id:A060285
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| A060285 |
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Number of partitions of n objects of 2 colors with parts size >1. |
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+0
2
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| 1, 0, 3, 4, 11, 18, 42, 70, 144, 248, 466, 802, 1442, 2444, 4247, 7116, 12030, 19878, 32938, 53670, 87429, 140680, 225815, 359100, 569157, 895224, 1402941, 2184662, 3388915, 5228458, 8035921, 12291710, 18732318, 28425342, 42981877, 64740330
(list; graph; listen)
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OFFSET
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0,3
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LINKS
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N. J. A. Sloane, Transforms
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FORMULA
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Euler transform of sequence [0, 3, 4, 5, 6, ...].
G.f.: Product_{k=2..infinity} 1/(1-x^k)^(k+1).
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CROSSREFS
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Cf. (row sums of) A060244, A060243, A005380.
Sequence in context: A027222 A026380 A030225 this_sequence A025079 A036652 A097072
Adjacent sequences: A060282 A060283 A060284 this_sequence A060286 A060287 A060288
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KEYWORD
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easy,nonn
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AUTHOR
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Vladeta Jovovic (vladeta(AT)Eunet.yu), Mar 23 2001
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EXTENSIONS
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Edited by Christian G. Bower (bowerc(AT)usa.net), Jan 08 2004
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