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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A223089 Numbers n, written in base 8, with the property that if the base-8 representation of n is read backwards, the result is 5*n. 2
 1015, 11165, 102515, 112665, 1016015, 1127665, 10151015, 10252515, 11176165, 11277665, 101501015, 102617515, 111661165, 112777665, 1015001015, 1016016015, 1025252515, 1026267515, 1116511165, 1117526165, 1126762665, 1127777665 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS For the decimal representations of these numbers, see A217742. Theorem: There are 2^{floor(d/2)-2} terms with d base-8 digits. LINKS Table of n, a(n) for n=1..22. EXAMPLE 1015 reversed is 5101 = 5*1015 (calculating in base 8). CROSSREFS Cf. A214927, A217742. Sequence in context: A335969 A225717 A117807 * A167807 A118879 A023083 Adjacent sequences: A223086 A223087 A223088 * A223090 A223091 A223092 KEYWORD nonn,base AUTHOR N. J. A. Sloane, Mar 23 2013 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 April 15 13:47 EDT 2024. Contains 371689 sequences. (Running on oeis4.)