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

 

Logo

Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing.
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A136944 Numbers n such that n and the square of n use only the digits 0, 3, 6, 7 and 9. 1
0, 3, 6, 30, 60, 63, 300, 306, 600, 603, 630, 3000, 3006, 3060, 6000, 6003, 6030, 6300, 30000, 30006, 30060, 30600, 60000, 60003, 60030, 60300, 63000, 63037, 79603, 300000, 300006, 300060, 300600, 306000, 600000, 600003, 600030, 600300, 603000, 630000, 630370, 796030, 796076, 3000000, 3000006, 3000060, 3000600, 3006000, 3060000, 6000000, 6000003 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Generated with DrScheme

LINKS

Jonathan Wellons, Table of n, a(n) for n=1..753

J. Wellons, Tables of Shared Digits

EXAMPLE

969067076796376^2 = 939090999330673300067366733376

MATHEMATICA

With[{ss={0, 3, 6, 7, 9}}, Select[FromDigits/@Tuples[ss, 7], SubsetQ[ ss, IntegerDigits[ #^2]]&]] (* Harvey P. Dale, May 29 2016 *)

CROSSREFS

Sequence in context: A260906 A136894 A136939 * A136946 A125521 A211168

Adjacent sequences:  A136941 A136942 A136943 * A136945 A136946 A136947

KEYWORD

base,nonn

AUTHOR

Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008

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 11 23:44 EST 2019. Contains 329945 sequences. (Running on oeis4.)