A018082 Powers of fourth root of 13 rounded to nearest integer.

1, 2, 4, 7, 13, 25, 47, 89, 169, 321, 609, 1157, 2197, 4172, 7921, 15041, 28561, 54232, 102978, 195538, 371293, 705022, 1338716, 2541993, 4826809, 9165285, 17403307, 33045903, 62748517, 119148699, 226242996