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A055793
Numbers n such that n and floor[n/3] are both squares; i.e. squares which remain squares when written in base 3 and last digit is removed.
+0
5
0, 1, 4, 49, 676, 9409, 131044, 1825201, 25421764, 354079489, 4931691076, 68689595569, 956722646884, 13325427460801, 185599261804324
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Maintained by
N. J. A. Sloane
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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.
AT&T Labs Research
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