login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A137073 Numbers k such that k and k^2 use only the digits 2, 3, 4, 6 and 9. 1
2, 3, 6, 63, 264, 632, 964, 2236, 4932, 4942, 4943, 22236, 22292, 26394, 26443, 49332, 49342, 49423, 49693, 49694, 62963, 66292, 66332, 222923, 494236, 494262, 494392, 494462, 496632, 499332, 499342, 499392, 499423, 499432, 626394, 996693, 996962, 2224694, 2496643, 2632343, 2632344, 2639364, 4946662, 4993332, 4993923, 4994236 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Generated with DrScheme.
LINKS
J. Wellons, Tables of Shared Digits [archived]
EXAMPLE
969362934942323^2 = 939664499639994332999336636329.
MATHEMATICA
With[{c={2, 3, 4, 6, 9}}, Table[Select[FromDigits/@Tuples[c, n], SubsetQ[c, IntegerDigits[ #^2]]&], {n, 7}]]//Flatten (* Harvey P. Dale, May 15 2017 *)
CROSSREFS
Sequence in context: A018409 A226933 A018415 * A018434 A124649 A018448
KEYWORD
base,nonn,changed
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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 22 21:06 EDT 2024. Contains 371906 sequences. (Running on oeis4.)