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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A159774 Least number m, written in base n, such that m/2 is obtained merely by shifting the leftmost digit of m to the right end, and 2m by shifting the rightmost digit of m to the left end, digits defined in base n. 4
 1012, 102, 102342, 1031345242, 103524563142, 1042, 10467842, 105263157894736842, 316, 10631694842 (list; graph; refs; listen; history; text; internal format)
 OFFSET 3,1 COMMENTS 10(b2) and 31(b5) do not both halve and double by rotations. No 2-digit answer can meet the description, so the sequence begins with a base 3 value. LINKS W. A. Hoffman III, Algorithm to compute terms. EXAMPLE 1042(b8)/2 = 421(b8) and 1042(b8)*2 = 2104(b8) 316 (base 11) = 380 (base 10), 163 (base 11) = 190 (base 10), 631 (base 11) = 760 (base 10). CROSSREFS Cf. A092697, A097717, A094224, A094676, A158877. See A147514 for these numbers written in base 10. Sequence in context: A291962 A094946 A158877 * A072140 A080467 A023058 Adjacent sequences:  A159771 A159772 A159773 * A159775 A159776 A159777 KEYWORD base,nonn,fini,full AUTHOR William A. Hoffman III (whoff(AT)robill.com), Apr 21 2009 EXTENSIONS Offset corrected by N. J. A. Sloane, Apr 23 2009 a(11) corrected. To indicate that terms from base n=13 on need digits larger than 9, keywords fini, full added. - Ray Chandler and R. J. Mathar, Apr 23 2009 Edited by Ray Chandler, May 02 2009 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.

Last modified August 7 22:11 EDT 2022. Contains 355995 sequences. (Running on oeis4.)