**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, 1, 4, 49, 676, 9409, 131044, 1825201, 25421764, 354079489, 4931691076*

*1 seqfan posts*

Index of A-numbers in seqfan: by ascending order by month by frequency by keyword

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