Fractional part of 72^(1/3) = 1/7 + 1/58 + 1/14467 + ... Generated with Perl's Math::BigFloat module. Number of digits in terms is as follows: 1, 2, 5, 9, 19, 37, 74, 148, 296, ...
EXAMPLE
Cube root of 72 = 4.1601676461038082290601136487157707726756106807465...