Table 1: Values of the successive lower/upper approximations and .

1.50 1.55 1.60 1.65 1.70 1.75

0.2500000 0.2396285 0.2326388 0.2286608 0.2273177 0.2281468
0.0625000 0.0795487 0.0954878 0.1138875 0.1307175 0.1464314
0.0156250 0.0322634 0.0490684 0.0671041 0.0850914 0.1029515
0.0039063 0.0211106 0.0383552 0.0558882 0.0734248 0.0909491
0.0009766 0.0183982 0.0358232 0.0532996 0.07075230.0881732

−0.0009766 −0.0236676 −0.0416446 −0.0552493 −0.0648509 −0.0708277
−0.0039063 −0.0269991 −0.0452915 −0.0591247 −0.0688717 −0.0749110
−0.0156250 −0.0399773 −0.0590208 −0.0731539 −0.0828101 −0.0884511
−0.0625000 −0.0871172 −0.1048556 −0.1164338 −0.1225992 −0.1243204
−0.2500000 −0.2427252 −0.2336358 −0.2230384 −0.2111877 −0.1982954