login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A104058 a(n) = |{k^2: 0 <= k^2 <= n}| + |{k^3: 0 <= k^3 <= n}|. 1
2, 4, 4, 4, 5, 5, 5, 5, 6, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 10, 11, 11, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 15, 15, 15, 15, 15, 15 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,1
LINKS
FORMULA
a(n) = 2 + floor(n^(1/2)) + floor(n^(1/3)).
CROSSREFS
Cf. A104055.
Sequence in context: A088650 A097154 A108421 * A132345 A178976 A352426
KEYWORD
nonn
AUTHOR
Giovanni Teofilatto, Mar 02 2005
EXTENSIONS
Better definition from Emeric Deutsch, Mar 25 2005
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 22 07:42 EDT 2024. Contains 374481 sequences. (Running on oeis4.)