N

1

2

7

10

15

25

60

100

∞

$B\left(N\right)$

0.50000

0.58333

0.65871

0.66877

0.67676

0.68325

0.68900

0.69065

0.69315

$R_2^2\left(N\right)$

0.50000

0.58333

0.65871

0.66877

0.67676

0.68325

0.68900

0.69065

0.69315

Error%

0.00000

0.00000

0.00000

0.00000

0.00000

0.00000

0.00000

0.00000

0.00000