A074896 Squares written backwards and sorted, duplicates removed.

1, 4, 9, 18, 46, 52, 61, 63, 94, 121, 144, 148, 163, 169, 423, 441, 484, 487, 522, 526, 652, 675, 676, 691, 925, 927, 961, 982, 1042, 1062, 1089, 1251, 1273, 1297, 1405, 1426, 1656, 1674, 1828, 1843, 1861, 4032, 4069, 4072, 4201, 4264, 4276, 4441, 4477