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URL: https://oeis.org/A137115

⇱ A137115 - OEIS

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A137115
Numbers k such that k and k^2 use only the digits 2, 5, 6 and 9.
0
5, 25, 22925, 22955665
OFFSET
1,1
COMMENTS
Generated with DrScheme.
No additional terms up to 10^11. - Harvey P. Dale, Mar 12 2018
LINKS
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
KEYWORD
base,nonn,more
AUTHOR
Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008
STATUS
approved