A018130 Powers of fifth root of 6 rounded to nearest integer.

1, 1, 2, 3, 4, 6, 9, 12, 18, 25, 36, 52, 74, 105, 151, 216, 309, 442, 633, 906, 1296, 1855, 2654, 3797, 5434, 7776, 11127, 15923, 22785, 32604, 46656, 66763, 95536, 136709, 195627, 279936, 400580, 573217, 820256