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A053950
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Numbers k such that k^2 contains only digits {4,5,7}.
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1
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OFFSET
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1,1
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LINKS
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Table of n, a(n) for n=1..10.
Author?, Source(txt)
P. De Geest, Squares containing at most three distinct digits, Index entries for related sequences
H. Mishima, Sporadic tridigital solutions
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CROSSREFS
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Cf. A053951.
Sequence in context: A166848 A283631 A001904 * A266182 A012728 A012733
Adjacent sequences: A053947 A053948 A053949 * A053951 A053952 A053953
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KEYWORD
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nonn,base,more
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AUTHOR
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Patrick De Geest, Mar 15 2000
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EXTENSIONS
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More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 04 2005
One more term from Mishima's webpage added by Max Alekseyev, Jan 28 2012
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STATUS
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approved
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