A061435 a(n) is the largest n-digit cube.

8, 64, 729, 9261, 97336, 970299, 9938375, 99897344, 997002999, 9993948264, 99961946721, 999700029999, 9999516957184, 99994258523375, 999970000299999, 9999934692543307, 99999429057832312, 999997000002999999

Offset

1,1

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Formula

a(n) = (ceiling(10^(n/3)) - 1)^3. - Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Mar 30 2003

Example

a(4) = 9261 = 21^3 has 4 digits while 22^3 = 10648 has 5 digits.

Maple

A061435 := n->(ceil(10^(n/3))-1)^3;

Mathematica

Table[Floor[Surd[10^n-1, 3]]^3, {n, 20}] (* Harvey P. Dale, Apr 02 2020 *)

Crossrefs

Cf. A061432, A061433, A061434.

Sequence in context: A238724 A318640 A088038 * A133054 A371988 A098560

Adjacent sequences: A061432 A061433 A061434 * A061436 A061437 A061438

Keyword

nonn,base,easy

Author

Amarnath Murthy, May 03 2001

Extensions

More terms from Larry Reeves (larryr(AT)acm.org), May 16 2001

Status

approved