The idempotent numbers are given by
where is a Bell polynomial and is a binomial coefficient. A table of the first few is given below.
The idempotent numbers are given by
where is a Bell polynomial and is a binomial coefficient. A table of the first few is given below.
Weisstein, Eric W. "Idempotent Number." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/IdempotentNumber.html