login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A083822 a(n) = digit reversal of 3*n divided by 3. 5
1, 2, 3, 7, 17, 27, 4, 14, 24, 1, 11, 21, 31, 8, 18, 28, 5, 15, 25, 2, 12, 22, 32, 9, 19, 29, 6, 16, 26, 3, 13, 23, 33, 67, 167, 267, 37, 137, 237, 7, 107, 207, 307, 77, 177, 277, 47, 147, 247, 17, 117, 217, 317, 87, 187, 287, 57, 157, 257, 27, 127, 227, 327, 97, 197, 297, 34 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

If n is a multiple of 10, then a(n) = a(n/10); if n is not a multiple of 10, then a(a(n)) = n.

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..1000

EXAMPLE

a(25) = reverse(3*25)/3 = reverse(75)/3 = 57/3 = 19.

MATHEMATICA

Table[FromDigits[Reverse[IntegerDigits[3n]]]/3, {n, 70}] (* Harvey P. Dale, May 19 2015 *)

PROG

(PARI) {for(n=1, 70, k=3*n; rev=0; while(k>0, d=divrem(k, 10); k=d[1]; rev=10*rev+d[2]); print1(rev/3, ", "))}

CROSSREFS

Cf. A083823, A083824, A083825.

Sequence in context: A245590 A110480 A268539 * A030086 A078721 A077007

Adjacent sequences:  A083819 A083820 A083821 * A083823 A083824 A083825

KEYWORD

base,easy,nonn

AUTHOR

Amarnath Murthy and Meenakshi Srikanth (menakan_s(AT)yahoo.com), May 08 2003

EXTENSIONS

Edited, corrected and extended by Klaus Brockhaus, May 11 2003

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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 18 12:00 EDT 2019. Contains 327170 sequences. (Running on oeis4.)