A018079 Powers of fourth root of 12 rounded to nearest integer.

1, 2, 3, 6, 12, 22, 42, 77, 144, 268, 499, 928, 1728, 3216, 5986, 11141, 20736, 38594, 71832, 133694, 248832, 463129, 861979, 1604324, 2985984, 5557542, 10343752, 19251892, 35831808, 66690509, 124125024