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A218451
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a(n) = 10^n minus its binary weight.
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1
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0, 8, 97, 994, 9995, 99994, 999993, 9999992, 99999988, 999999987, 9999999989, 99999999985, 999999999987, 9999999999986, 99999999999983, 999999999999980, 9999999999999980, 99999999999999980, 999999999999999976, 9999999999999999981, 99999999999999999974
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internal format)
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OFFSET
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0,2
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LINKS
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FORMULA
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EXAMPLE
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a(2) = 97 because 10^2 = 100, which is 1100100 in binary, having 3 on bits, and 100 - 3 = 97.
a(3) = 994 because 10^3 = 1000, which is 1111101000 in binary, having 6 on bits, and 1000 - 6 = 994.
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MATHEMATICA
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Table[10^n - DigitCount[10^n, 2, 1], {n, 0, 19}]
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PROG
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CROSSREFS
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KEYWORD
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nonn,easy,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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