The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A014885 n is equal to the number of 1's in all numbers <= n written in base 8. 0
 1, 8177, 8178, 8179, 8180, 8181, 8182, 8183, 8184, 8192, 8193, 49137, 49138, 49139, 49140, 49141, 49142, 49143, 49144, 90112, 90113, 322096, 1048576, 1048577, 1056753, 1056754, 1056755, 1056756, 1056757, 1056758, 1056759, 1056760, 1056768, 1056769, 1097713, 1097714, 1097715, 1097716, 1097717, 1097718, 1097719, 1097720, 1138688, 1138689, 2396744 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Table of n, a(n) for n=1..45. MAPLE T:= 0: R:= NULL: for n from 1 to (8^8-1)/(8-1) do T:= T + numboccur(1, convert(n, base, 8)); if T = n then R:= R, n; count:= count+1; fi od: R; # Robert Israel, Dec 01 2020 MATHEMATICA Module[{nn=106*10^4, n1s}, n1s=Accumulate[Table[DigitCount[n, 8, 1], {n, nn}]]; Position[Thread[{n1s, Range[nn]}], _?(#[[1]]==#[[2]]&), 1, Heads-> False]]// Flatten (* Harvey P. Dale, Feb 28 2020 *) CROSSREFS Cf. A014778. Sequence in context: A096329 A126823 A205092 * A252217 A351448 A235095 Adjacent sequences: A014882 A014883 A014884 * A014886 A014887 A014888 KEYWORD nonn,base,fini,full AUTHOR Olivier Gérard 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 May 21 16:52 EDT 2024. Contains 372738 sequences. (Running on oeis4.)