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A136920
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Numbers k such that k and k^2 use only the digits 0, 2, 5 and 9.
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1
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0, 5, 50, 95, 500, 505, 950, 995, 5000, 5005, 5050, 5095, 9500, 9950, 9995, 50000, 50005, 50050, 50095, 50500, 50950, 95000, 95005, 99500, 99950, 99995, 500000, 500005, 500050, 500095, 500500, 500505, 500950, 500995, 502005, 505000, 509500, 950000, 950005, 950050, 995000, 999500, 999950, 999995, 5000000, 5000005, 5000050, 5000095, 5000500
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listen;
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text;
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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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95005050000095^2 = 9025959525520550959500009025.
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CROSSREFS
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KEYWORD
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base,nonn,changed
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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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