A030098 Squares whose digits are all even.

0, 4, 64, 400, 484, 4624, 6084, 6400, 8464, 26244, 28224, 40000, 40804, 48400, 68644, 88804, 228484, 242064, 248004, 446224, 462400, 608400, 640000, 806404, 824464, 846400, 868624, 2022084, 2226064, 2244004, 2624400