%I #16 May 06 2023 23:08:06
%S 1,-2,8,-50,434,-4864,66996,-1095324,20724756,-445310616,10708301328,
%T -284863999848,8304979127496,-263299784899488,9018495674420592,
%U -331867682445078000,13057137391032043920,-546957850901539335840
%N Exponential reversion of sequence of involutions (A000085).
%H Andrew Howroyd, <a href="/A050398/b050398.txt">Table of n, a(n) for n = 1..200</a>
%H N. J. A. Sloane, <a href="/transforms.txt">Transforms</a>
%H <a href="/index/Res#revert">Index entries for reversions of series</a>
%F E.g.f. A(x) satisfies: A(x) = log(1 + x) - A(x)^2/2. - _Ilya Gutkovskiy_, Apr 23 2020
%o (PARI) seq(n)=Vec(serlaplace(serreverse(-1 + exp(x+x^2/2 + O(x*x^n))))) \\ _Andrew Howroyd_, May 06 2023
%Y Cf. A000085, A050397.
%K sign
%O 1,2
%A _Christian G. Bower_, Nov 15 1999