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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A083378 a(n) is the largest integer whose cube has n digits and first digit 1, except that a(2)=2. 3
 1, 2, 5, 12, 27, 58, 125, 271, 584, 1259, 2714, 5848, 12599, 27144, 58480, 125992, 271441, 584803, 1259921, 2714417, 5848035, 12599210, 27144176, 58480354, 125992104, 271441761, 584803547, 1259921049, 2714417616, 5848035476 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS a(2)=2 because there is no integer with cube between 10 and 19. A generalization to arbitrary powers is found in Hürlimann, 2004. LINKS W. Hürlimann, Integer powers and Benford's law, International Journal of Pure and Applied Mathematics, vol. 11, no. 1, pp. 39-46, 2004. FORMULA a(n) = floor((10^n/5)^(1/3)). MATHEMATICA Floor[Power[(10^Range[30])/5, (3)^-1]] (* Harvey P. Dale, Jul 15 2011 *) CROSSREFS Cf. A061439, A083377, A083379, A083380. Sequence in context: A076878 A129983 A307265 * A116712 A000102 A304175 Adjacent sequences:  A083375 A083376 A083377 * A083379 A083380 A083381 KEYWORD base,easy,nonn AUTHOR Werner S. Hürlimann (whurlimann(AT)bluewin.ch), Jun 05 2003 EXTENSIONS Edited by Don Reble, Nov 05 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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified January 16 17:15 EST 2022. Contains 350376 sequences. (Running on oeis4.)