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A061439
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Largest number whose cube has n digits.
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14
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2, 4, 9, 21, 46, 99, 215, 464, 999, 2154, 4641, 9999, 21544, 46415, 99999, 215443, 464158, 999999, 2154434, 4641588, 9999999, 21544346, 46415888, 99999999, 215443469, 464158883, 999999999, 2154434690, 4641588833, 9999999999
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| a(n) + A181375(n) + A181377(n) + A181379(n) + A181381(n) + A181400(n) + A181402(n) + A181404(n) + A130130(n) = A002283(n)
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FORMULA
| a(n)=ceil(10^(n/3))-1 - Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Mar 30 2003
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EXAMPLE
| a(5) = 46, 46^3 = 97336 has 5 digits, while 47^3 = 103823 has 6 digits.
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MAPLE
| Digits := 100:
A061439 := n->ceil(10^(n/3))-1:
seq (A061439(n), n=1..40);
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CROSSREFS
| a(n) is one more than the corresponding term of A018005. Cf. A061435.
Sequence in context: A035056 A093698 A091619 * A027711 A084634 A137256
Adjacent sequences: A061436 A061437 A061438 * A061440 A061441 A061442
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KEYWORD
| nonn,base,easy
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AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), May 03 2001
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EXTENSIONS
| More terms from Larry Reeves (larryr(AT)acm.org), May 16 2001
Typo in Maple program fixed by Martin Renner (martin.renner(AT)gmx.net), Jan 31 2011
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