Maxima Function
inrt (x, n)
Returns the integer n'th root of the absolute value of x.
(%i1) l: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]$ (%i2) map (lambda ([a], inrt (10^a, 3)), l); (%o2) [2, 4, 10, 21, 46, 100, 215, 464, 1000, 2154, 4641, 10000]