Fractional part of 31^(1/3) = 1/8 + 1/62 + 1/3975 + ... Generated with Perl's Math::BigFloat module. Number of digits in terms is as follows: 1, 2, 4, 8, 16, 32, 65, 129, 259, ...
EXAMPLE
Cube root of 31 = 3.1413806523913930044930758964627499263508597185007...