Update app.py

app.py

@@ -389,6 +389,10 @@ def create_demo():
                 "./examples/13.png",
                 "As shown in Figure 1, it is a right-angled triangular paper piece, $$ \angle A=30^{ \circ }$$, $$BC=\quantity{4}{cm}$$, it is folded so that point $$C$$ lands on point $$C'$$ on the hypotenuse, with the fold line being $$BD$$, as shown in Figure 2. Then, Figure 2 is folded along $$DE$$, so that point $$A$$ lands on point $$A'$$ on the extension of $$DC'$$, as shown in Figure 3. The length of the fold line $$DE$$ is ___.",
             ],
+            [
+                "./examples/14.png",
+                "As shown in the figure, in the 'Pascal's Triangle', the numbers above the diagonal line $$AB$$, indicated by the arrows, form a zigzag sequence: $$1$$, $$2$$, $$3$$, $$3$$, $$6$$, $$4$$, $$10$$, $$\cdots$$, let the sum of the first $$n$$ terms of this sequence be $$S_{n}$$, then $$S_{16}=$$ ___.",
+            ],
         ]
         
         gr.Examples(