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 A179857 Smallest number greater than n having in binary representation exactly twice the number of ones as n has in binary representation. 4
 3, 3, 15, 5, 15, 15, 63, 9, 15, 15, 63, 15, 63, 63, 255, 17, 23, 23, 63, 23, 63, 63, 255, 27, 63, 63, 255, 63, 255, 255, 1023, 33, 39, 39, 63, 39, 63, 63, 255, 43, 63, 63, 255, 63, 255, 255, 1023, 51, 63, 63, 255, 63, 255, 255, 1023, 63, 255, 255, 1023, 255, 1023, 1023 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS a(n) = Min{m: m > n and A000120(m) = 2*A000120(n)}; a(n) is odd; n < a(n) < A000290(A062383(n)); a(A000079(n)) = A000051(n); A024036 and A000225 give record values and where they occur. LINKS R. Zumkeller, Table of n, a(n) for n = 1..1000 MATHEMATICA br2[n_]:=Module[{k=If[EvenQ[n], n+1, n+2], t=2*DigitCount[n, 2, 1]}, While[ DigitCount[ k, 2, 1]!=t, k=k+2]; k]; Array[br2, 70] (* Harvey P. Dale, Sep 20 2016 *) CROSSREFS Cf. A086799. Sequence in context: A287188 A100347 A165405 * A260078 A163590 A114320 Adjacent sequences:  A179854 A179855 A179856 * A179858 A179859 A179860 KEYWORD base,nonn AUTHOR Reinhard Zumkeller, Jul 31 2010 EXTENSIONS Definition clarified by Harvey P. Dale, Sep 20 2016 STATUS approved

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Last modified June 25 10:10 EDT 2019. Contains 324351 sequences. (Running on oeis4.)