login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A024640 n written in fractional base 7/3. 3
0, 1, 2, 3, 4, 5, 6, 30, 31, 32, 33, 34, 35, 36, 60, 61, 62, 63, 64, 65, 66, 320, 321, 322, 323, 324, 325, 326, 350, 351, 352, 353, 354, 355, 356, 610, 611, 612, 613, 614, 615, 616, 640, 641, 642, 643, 644, 645, 646, 3200, 3201, 3202, 3203, 3204, 3205, 3206, 3230, 3231 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Alois P. Heinz, Table of n, a(n) for n = 0..10000

FORMULA

To represent a number in base b, if a digit exceeds b, subtract b and carry 1. In fractional base a/b, subtract a and carry b.

MAPLE

a:= proc(n) `if`(n<1, 0, irem(n, 7, 'q')+a(3*q)*10) end:

seq(a(n), n=0..57);  # Alois P. Heinz, May 14 2021

CROSSREFS

Sequence in context: A303367 A037332 A091690 * A037403 A037439 A004846

Adjacent sequences:  A024637 A024638 A024639 * A024641 A024642 A024643

KEYWORD

nonn,base

AUTHOR

David W. Wilson

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 December 9 08:41 EST 2021. Contains 349627 sequences. (Running on oeis4.)