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A037315
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Numbers whose base-3 and base-10 expansions have the same digit sum.
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2
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1, 2, 21, 22, 23, 40, 41, 80, 111, 112, 113, 132, 133, 134, 150, 151, 152, 204, 205, 206, 222, 223, 224, 312, 313, 314, 350, 420, 421, 422, 440, 510, 511, 512, 530, 600, 601, 602, 800, 1014, 1015, 1016, 1032, 1033, 1034, 1070, 1140
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OFFSET
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1,2
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COMMENTS
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LINKS
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MAPLE
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filter:= n -> convert(convert(n, base, 3), `+`)=convert(convert(n, base, 10), `+`):
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MATHEMATICA
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Select[Range[1200], Total[IntegerDigits[#]]==Total[IntegerDigits[#, 3]]&] (* Harvey P. Dale, May 11 2018 *)
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PROG
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(PARI) isok(n) = sumdigits(n, 3) == sumdigits(n, 10); \\ Michel Marcus, Mar 12 2018
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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