Grid

51 × 51

−0.99034809

−0.9903612342

−0.14564560

−0.1456475382

71 × 71

0.910207179

0.91021335413

−0.41656319

−0.4165660175

151 × 151

−0.79446192

−0.7944631049

0.608959970

0.60896087175

201 × 201

−0.84231287

−0.8423135783

0.540842878

0.54084332896

271 × 271

−0.09140859

−0.0914086402

−0.99681817

−0.9968186284