The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A178924 Sum_{k>0} (n mod k) * 2^(n-k). 0
 0, 1, 2, 5, 6, 23, 16, 89, 106, 267, 364, 1741, 526, 5135, 9360, 17681, 16914, 99347, 71188, 404501, 372758, 892951, 1763352, 7720985, 2809882, 17154075, 34201628, 82821149, 83623966, 435683359, 189300768, 1452343329, 1695678498, 4418961443, 8835694628 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS Table of n, a(n) for n=0..34. MAPLE a:= n-> add ((n mod k) * 2^(n-k), k=1..n-1) + n: seq (a(n), n=0..40); MATHEMATICA Table[Sum[Mod[n, k] 2^(n-k), {k, 1, Infinity}], {n, 0, 100}] CROSSREFS Sequence in context: A014454 A136324 A128367 * A303659 A250546 A137067 Adjacent sequences: A178921 A178922 A178923 * A178925 A178926 A178927 KEYWORD nonn AUTHOR Vladimir Reshetnikov, Dec 29 2010 EXTENSIONS Edited by Alois P. Heinz, Dec 29 2010 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified February 29 06:12 EST 2024. Contains 370401 sequences. (Running on oeis4.)