References to A055808

a(n) and floor[a(n)/4] are both squares; i.e. squares which remain squares when written in base 4 and last digit is removed.
0, 1, 4, 16, 36, 64, 100, 144, 196, 256, 324, 400, 484, 576, 676, 784, 900, 1024, 1156

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