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A077107
Least integer cube >= n^2.
5
0, 1, 8, 27, 27, 27, 64, 64, 64, 125, 125, 125, 216, 216, 216, 343, 343, 343, 343, 512, 512, 512, 512, 729, 729, 729, 729, 729, 1000, 1000, 1000, 1000, 1331, 1331, 1331, 1331, 1331, 1728, 1728, 1728, 1728, 1728, 2197, 2197, 2197, 2197, 2197, 2744
OFFSET
0,3
COMMENTS
a(n) - A070923(n) = n^2.
LINKS
EXAMPLE
a(20)=512, as 512=8^3 is the least cube >= 400=20^2.
MATHEMATICA
Table[Ceiling[Surd[n^2, 3]]^3, {n, 0, 50}] (* Harvey P. Dale, Jan 02 2020 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Oct 29 2002
STATUS
approved