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A137038
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Numbers k such that k and k^2 use only the digits 1, 3, 6, 7 and 8.
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1
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1, 6, 131, 876, 881, 8131, 8876, 11731, 13181, 18376, 18381, 37131, 88776, 116881, 117181, 117776, 133181, 183776, 336731, 888131, 1366881, 1373376, 3336731, 3371376, 3713181, 6113376, 7866881, 11761731, 13167131, 13717776, 13718131, 13738181, 33336731, 33367181, 37118376, 37133181, 61383131, 78668776, 87367681, 87616881, 117383181
(list;
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refs;
listen;
history;
text;
internal format)
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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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878161817313181^2 = 771168177386788681117836338761.
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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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