(PARI){a(n)=局部(a=向量(n+3,j,1+j*x));对于(i=0,n+2,对于(j=0,n,m=n+2-j;a[m]=exp(m*intformal(a[m+1]+x*O(x^n))));n!*polcoeff(a[2]^(1/2),n,x)}
(PARI){a(n)=局部(a=向量(n+3,j,1+j*x));对于(i=0,n+2,对于(j=0,n,m=n+2-j;a[m]=exp(整数(a[m+1]^(m+1)+x*O(x^n))));n!*polcoff(a[2],n,x)}
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