A144913 Integers which are the product of even powers of primes up to 13.

4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225, 256, 324, 400, 441, 484, 576, 625, 676, 729, 784, 900, 1024, 1089, 1225, 1296, 1521, 1600, 1764, 1936, 2025, 2304, 2401, 2500, 2704, 2916, 3025, 3136, 3600, 3969, 4096, 4225, 4356, 4900, 5184, 5625