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Search: id:A055528
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| A055528 |
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a(n)=10*a(n-1)+n^3, a(0)=0. |
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+0
1
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| 0, 1, 18, 207, 2134, 21465, 214866, 2149003, 21490542, 214906149, 2149062490, 21490626231, 214906264038, 2149062642577, 21490626428514, 214906264288515, 2149062642889246
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OFFSET
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0,3
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COMMENT
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a(n)/10^n converges to 470/2187=0.214906264...
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FORMULA
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a(n) =(10^n-1)*(470/2187)-n^3/9-n^2*(10/27)-n*(110/243)
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CROSSREFS
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Cf. A014824.
Sequence in context: A028025 A109126 A022742 this_sequence A025959 A004323 A025937
Adjacent sequences: A055525 A055526 A055527 this_sequence A055529 A055530 A055531
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KEYWORD
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nonn
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AUTHOR
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Henry Bottomley (se16(AT)btinternet.com), Jul 04 2000
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EXTENSIONS
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Corrected by T. D. Noe (noe(AT)sspectra.com), Nov 08 2006
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