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Search: id:A061306
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| A061306 |
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Bell Bell numbers: a(n+1) = B(a(n)), where B() are the Bell numbers, A000110. |
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+0
2
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| 1, 2, 52, 1382958545, 58205338024195872785464627063218599149503972126463
(list; graph; listen)
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OFFSET
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0,2
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REFERENCES
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Amarnath Murthy, Generalization of Partition Function. Introducing Smarandache Factor Partitions.Smarandache Notions Journal, Vol. 11, No. 1-2-3, Spring 2000.
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LINKS
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M. L. Perez et al., eds., Smarandache Notions Journal
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EXAMPLE
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a(3) = 52, 5 is the 3rd Bell number and the fifth Bell number is 52.
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MAPLE
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with(combinat): for n from 1 to 6 do printf(`%d, `, bell(bell(n))) od:
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CROSSREFS
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Cf. A000110.
Sequence in context: A080973 A079179 A000654 this_sequence A139841 A167771 A062853
Adjacent sequences: A061303 A061304 A061305 this_sequence A061307 A061308 A061309
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KEYWORD
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nonn,easy
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Apr 26 2001
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EXTENSIONS
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More terms from James A. Sellers (sellersj(AT)math.psu.edu), Sep 26 2001
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