nmax=22;系数列表[系列[产品[(1+(Exp[x]-1)^k/k),{k,1,nmax}],{x,0,nmax{],x]范围[0,nmax]!
nmax=22;系数列表[Series[Exp[Sum[Sum[(-1)^(k+1))(Exp[x]-1)^(j k)/(k j ^ k),{j,1,nmax}],{k,1,nmax}]],{x,0,nmax}],x]Range[0,nmax]!
b[0]=1;b[n]:=b[n]=和[(n-1)!/(n-k)!除数和[k,(-#)^(1-k/#)&]b[n-k],{k,1,n}];a[n]:=a[n]=总和[StirlingS2[n,k]b[k],{k,0,n}];表[a[n],{n,0,22}]