Update app.py

app.py

@@ -38,7 +38,7 @@ def calculate_fourier_coefficients(xs, ys, num_points, coefficients):
 
     N = coefficients
     indices = [0] + [j for i in range(1, N + 1) for j in (i, -i)]
-    with ThreadPoolExecutor(max_workers=4) as executor:
+    with ThreadPoolExecutor(max_workers=2) as executor:
         coefs = list(executor.map(lambda n: (compute_cn(f_precomputed, n, t_values), n), indices))
     
     return coefs