Sequence of Powers of 15

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Integer Sequence

The sequence of powers of $15$ begins:

$1, 15, 225, 3375, 50 \, 625, 759 \, 375, 11 \, 390 \, 625, 170 \, 859 \, 375, \ldots$

This sequence is A001024 in the On-Line Encyclopedia of Integer Sequences (N. J. A. Sloane (Ed.), 2008).