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A136887 Numbers k such that k and k^2 use only the digits 0, 2, 3 and 5. 1
0, 5, 50, 55, 235, 500, 505, 550, 2350, 5000, 5005, 5050, 5055, 5500, 5505, 23500, 50000, 50005, 50050, 50055, 50235, 50500, 50550, 55000, 55005, 55050, 235000, 235235, 500000, 500005, 500050, 500055, 500235, 500500, 500505, 500550, 502350, 505000, 505005, 505500, 505505, 550000, 550005, 550050, 550500, 2350000, 2350005, 2352350, 5000000 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Generated with DrScheme.
LINKS
J. Wellons, Tables of Shared Digits [archived]
EXAMPLE
5005020505005^2 = 25050230255520505230050025.
MATHEMATICA
With[{c={0, 2, 3, 5}}, Select[FromDigits/@Tuples[c, 7], SubsetQ[c, IntegerDigits[ #^2]]&]] (* Harvey P. Dale, Dec 18 2018 *)
CROSSREFS
Sequence in context: A218290 A136890 A136889 * A169964 A061474 A136916
KEYWORD
base,nonn
AUTHOR
Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008
STATUS
approved

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Last modified July 12 14:24 EDT 2024. Contains 374251 sequences. (Running on oeis4.)