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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A061657 In base 3 n and n^2 contain the same digits in the same proportion. 12
184, 196, 464, 500, 544, 550, 552, 584, 588, 622, 626, 670, 706, 1392, 1436, 1472, 1500, 1552, 1632, 1650, 1654, 1656, 1744, 1752, 1764, 1866, 1868, 1878, 1978, 2010, 2030, 2116, 2118, 3922, 4136, 4176, 4308, 4388, 4416, 4500, 4656, 4732, 4756, 4896, 4900 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Alois P. Heinz, Table of n, a(n) for n = 1..10000

EXAMPLE

184 = 20211_3 and 184^2 = 1201102221_3.

MAPLE

p:= n-> add(x^i, i=convert(n, base, 3)):

a:= proc(n) option remember; local k;

      for k from 1+`if`(n=1, 0, a(n-1))

      while p(k)*2<>p(k^2) do od; k

    end:

seq(a(n), n=1..50);  # Alois P. Heinz, May 10 2015

CROSSREFS

Cf. A061656, A061658, A061659, A061660, A061661, A061662, A061663, A114258, A061664.

Sequence in context: A272126 A171563 A347504 * A217301 A239457 A235258

Adjacent sequences:  A061654 A061655 A061656 * A061658 A061659 A061660

KEYWORD

base,easy,nonn

AUTHOR

Erich Friedman, Jun 16 2001

EXTENSIONS

Offset changed to 1 by Alois P. Heinz, May 10 2015

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 27 21:12 EDT 2021. Contains 347698 sequences. (Running on oeis4.)