Odious Number

DOWNLOAD Mathematica NotebookDownload Wolfram Notebook

An odious number is a nonnegative number that has an odd number of 1s in its binary expansion. The first few odious numbers are therefore 1, 2, 4, 7, 8, 11, 13, 14, 16, 19, ... (OEIS A000069). Numbers that are not odious are said to be evil numbers.

See also

Economical Number, Evil Number, Happy Number, Lucky Number, Unhappy Number, Wasteful Number

Explore with Wolfram|Alpha

References

Sloane, N. J. A. Sequence A000069 in "The On-Line Encyclopedia of Integer Sequences."

Referenced on Wolfram|Alpha

Odious Number

Cite this as:

Weisstein, Eric W. "Odious Number." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/OdiousNumber.html

Subject classifications