%I #7 Mar 30 2012 17:21:00
%S 0,1,1,3,9,31,112,422,1635,6473,26059,106327,438633,1826139,7661696,
%T 32358548,137447482,586747512,2515770639,10828744149,46772289354,
%U 202649880510,880475437710,3835178089380,16743665584620
%N Reversion of y - y^2 - y^3 + y^4 + y^5.
%H <a href="/index/Res#revert">Index entries for reversions of series</a>
%t CoefficientList[InverseSeries[Series[y - y^2 - y^3 + y^4 + y^5, {y, 0, 30}], x], x]
%K nonn,easy
%O 0,4
%A _Olivier GĂ©rard_, Jul 05 2001.