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A163449
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A007582 written in base 2.
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5
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1, 11, 1010, 100100, 10001000, 1000010000, 100000100000, 10000001000000, 1000000010000000, 100000000100000000, 10000000001000000000, 1000000000010000000000, 100000000000100000000000, 10000000000001000000000000, 1000000000000010000000000000
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OFFSET
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0,2
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COMMENTS
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For n >= 1, the digits are a "1", (n-1) times "0", a "1", and (n-1) times "0".
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LINKS
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FORMULA
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a(n) = 10^(2n-1) + 10^(n-1) = A163664(n)/10 for n >= 1.
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MATHEMATICA
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Join[{1}, Table[10^(2n-1) + 10^(n-1), {n, 1, 25}]] (* or *) Join[{1}, LinearRecurrence[{110, -1000}, {11, 1010}, 25]] (* G. C. Greubel, Dec 24 2016 *)
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PROG
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(PARI) concat([1], for(n=1, 50, print1(10^(2*n-1) + 10^(n-1), ", "))) \\ G. C. Greubel, Dec 24 2016
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CROSSREFS
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KEYWORD
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nonn,base,easy
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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