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!)
A137115 Numbers n such that n and the square of n use only the digits 2, 5, 6 and 9. 0
5, 25, 22925, 22955665 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Generated with DrScheme

No additional terms up to 10^11. - Harvey P. Dale, Mar 12 2018

LINKS

Table of n, a(n) for n=1..4.

J. Wellons, Tables of Shared Digits

EXAMPLE

22955665^2 = 526962555592225

MATHEMATICA

With[{c={2, 5, 6, 9}}, Select[Flatten[Table[FromDigits/@Tuples[c, n], {n, 9}]], SubsetQ[c, IntegerDigits[#^2]]&]] (* Harvey P. Dale, Mar 12 2018 *)

CROSSREFS

Sequence in context: A033981 A099077 A137113 * A060063 A106295 A057688

Adjacent sequences:  A137112 A137113 A137114 * A137116 A137117 A137118

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 7 20:31 EST 2019. Contains 329849 sequences. (Running on oeis4.)