The compositional inverse of a class of linearized permutation polynomials over F2nF2n, n odd

In this paper, the compositional inverses of a class of linearized permutation polynomials of the form P(x)=x+x2+tr(x/a)P(x)=x+x2+tr(x/a) over the finite field F2nF2n for an odd positive integer n  , where “tr” is the trace function over F2nF2n, are explicitly determined.