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A032540
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Numbers that, when expressed in base 4 and then interpreted in base 10, yield a multiple of the original number.
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4
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0, 1, 2, 3, 6, 24, 120, 171, 177, 273, 362, 440, 546, 819, 1418, 1560, 1582, 1638, 1760, 1806, 2400, 2841, 2927, 3640, 4706, 4882, 5720, 6328, 6552, 7040, 7224, 9431, 9600, 10101, 14560, 20202, 22880, 24800, 25080, 25312, 28896, 32760, 36974, 38400
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OFFSET
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1,3
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COMMENTS
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LINKS
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EXAMPLE
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24 in base 4 is 120, which interpreted in base 10 is 120 = 5*24.
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MAPLE
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filter:= proc(n) local L, t;
L:= convert(n, base, 4);
t:= add(L[i]*10^(i-1), i=1..nops(L));
t mod n = 0
end proc:
filter(0):=true:
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MATHEMATICA
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Join[{0}, Select[Range[40000], Divisible[FromDigits[IntegerDigits[#, 4]], #]&]] (* Harvey P. Dale, Apr 20 2011 *)
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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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EXTENSIONS
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STATUS
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approved
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