Fractional part of 91^(1/3) = 1/3 + 1/7 + 1/46 + ... Generated with Perl's Math::BigFloat module. Number of digits in terms is as follows: 1, 1, 2, 5, 10, 21, 41, 82, 165, 331, ...
EXAMPLE
Cube root of 91 = 4.4979414452754147963915607943073573296834506265033...