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
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