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%I #7 Mar 30 2012 17:21:00
%S 0,1,1,3,11,43,182,806,3687,17297,82753,402207,1980407,9857715,
%T 49522564,250768564,1278600022,6558731904,33823966611,175264755549,
%U 912043488146,4764361204130,24974974692240,131335127655540
%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 Gérard_, Jul 05 2001.