Evil number (nonfiction)
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In number theory, an evil number is a non-negative number that has an even number of 1s in its binary expansion.
The first evil numbers are: 0, 3, 5, 6, 9, 10, 12, 15, 17, 18, 20, 23, 24, 27, 29, 30, 33, 34, 36, 39 ...
Numbers that are not evil are called odious numbers.
Not to be confused with Evil bit (nonfiction).
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External links:
- Evil number @ Wikipedia