>>> suite_recurrente(u,0,25,3)
[3, -0.200, 1.848, 0.065, 1.522, 0.237, 1.327, 0.360, 1.194, 0.452, 1.098, 0.523, 1.027, 0.579, 
0.973, 0.622, 0.931, 0.656, 0.899, 0.683, 0.874, 0.704, 0.854, 0.721, 0.839, 0.734]