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 A105209 Nearest integer to the cube root of n. 2
 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,4 REFERENCES Erwin Voellmy, Fuenfstellige Logarithmen und Zahlentafeln, Orell Füssli Verlag, Zürich (1962). LINKS EXAMPLE a(16) = 3 because 16^(1/3) = 2.519842... MAPLE for n from 1 to 200 do printf(`%d, `, round(n^(1/3))) od: # James A. Sellers, Apr 21 2005 MATHEMATICA Round[Surd[Range[110], 3]] (* Harvey P. Dale, Feb 28 2015 *) PROG (PARI) a(n) = round(n^(1/3)); \\ Michel Marcus, Aug 19 2016 CROSSREFS Sequence in context: A001069 A156877 A110591 * A179076 A095861 A111855 Adjacent sequences:  A105206 A105207 A105208 * A105210 A105211 A105212 KEYWORD easy,nonn AUTHOR Pahikkala Jussi, Apr 13 2005 EXTENSIONS More terms from James A. Sellers, Apr 21 2005 STATUS approved

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Last modified January 19 18:13 EST 2020. Contains 331051 sequences. (Running on oeis4.)