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A137065
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Numbers k such that k and k^2 use only the digits 1, 6, 7, 8 and 9.
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1
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1, 9, 786, 881, 887, 7867, 8167, 8887, 81619, 81791, 81969, 88776, 88869, 88987, 781791, 819687, 876167, 988776, 988869, 7866187, 7866881, 8168119, 8179119, 8768619, 8819687, 8881886, 78177867, 81718796, 81968176, 87817891, 88191786, 88191791, 88196819, 88711886, 88768619, 88817891, 88866187, 88876987, 781779891, 786117796
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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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786891978716786^2 = 619198986168818791199198169796.
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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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