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A136875
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Numbers k such that k and k^2 use only the digits 0, 1, 6 and 7.
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0
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0, 1, 10, 100, 1000, 10000, 100000, 1000000, 1077776, 10000000, 10777760, 100000000, 107777600, 1000000000, 1077776000, 10000000000, 10777760000, 100000000000, 107777600000, 1000000000000, 1077776000000, 10000000000000, 10777760000000, 100000000000000, 107777600000000
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OFFSET
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1,3
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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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107777600000000^2 = 11616011061760000000000000000.
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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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