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A135495
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Numbers n with property that for each single digit d of n, we can also see the decimal expansion of 2d as a substring of n.
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2
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0, 121648, 121684, 124168, 124816, 128164, 128416, 161248, 161284, 164128, 164812, 168124, 168412, 412168, 412816, 416128, 416812, 481216, 481612, 812164, 812416, 816124, 816412, 841216, 841612, 1121648, 1121684, 1124168
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OFFSET
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1,2
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LINKS
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MATHEMATICA
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Select[Range[0, 10^6], Function[d, AllTrue[IntegerDigits[2 d], SequenceCount[d, #] >= 1 &]]@ IntegerDigits[#] &] (* Michael De Vlieger, Jan 11 2018 *)
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PROG
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For C++ program see the Applegate link in A135463.
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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