Loading docs/math/catalan.md +18 −0 Original line number Diff line number Diff line Loading @@ -24,3 +24,21 @@ $$ H_n=\frac{C_{2n}^{n}}{n+1}(n=1,2,3,\cdots) $$ 或者是 $$ H_n=H_0*H_(n-1)+H_1*H_(n-2)+...+H_(n-1)*H_0, (n>=2), H_0=H_1=1 $$ 或者是 $$ H_n=H_(n-1)*(4*n-2)/(n+1) $$ 或者是 $$ H_n=C_{2n}^{n}-C_{2n}^{n-1} $$ Loading
docs/math/catalan.md +18 −0 Original line number Diff line number Diff line Loading @@ -24,3 +24,21 @@ $$ H_n=\frac{C_{2n}^{n}}{n+1}(n=1,2,3,\cdots) $$ 或者是 $$ H_n=H_0*H_(n-1)+H_1*H_(n-2)+...+H_(n-1)*H_0, (n>=2), H_0=H_1=1 $$ 或者是 $$ H_n=H_(n-1)*(4*n-2)/(n+1) $$ 或者是 $$ H_n=C_{2n}^{n}-C_{2n}^{n-1} $$
