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A136918
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Numbers k such that k and k^2 use only the digits 0, 2, 5 and 8.
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1
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0, 5, 50, 500, 505, 2255, 5000, 5005, 5050, 22550, 50000, 50005, 50050, 50500, 50555, 225500, 225505, 500000, 500005, 500050, 500500, 500505, 505000, 505550, 505555, 508805, 2255000, 2255050, 5000000, 5000005, 5000050, 5000500, 5000505, 5002255, 5005000, 5005050, 5005555, 5050000, 5050005, 5052255, 5055500, 5055550, 5088050, 22550000
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listen;
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OFFSET
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1,2
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COMMENTS
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Generated with DrScheme.
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LINKS
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EXAMPLE
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505000500500005^2 = 255025505505255550255005000025.
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CROSSREFS
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KEYWORD
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base,nonn
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AUTHOR
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Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008
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STATUS
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approved
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