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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
EXAMPLE
1015 reversed is 5101 = 5*1015 (calculating in base 8).
CROSSREFS
Sequence in context: A335969 A225717 A117807 * A167807 A118879 A023083
KEYWORD
nonn,base
AUTHOR
N. J. A. Sloane, Mar 23 2013
STATUS
approved

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Last modified April 15 13:47 EDT 2024. Contains 371689 sequences. (Running on oeis4.)