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Table of n, a(n) for n=1..48.
a(8) = 146 because 146^3 = 3112136 includes all digits of 146^2 = 21316.
Cf. A029772, A046827, A046829.
Sequence in context: A072421 A163477 A084664 * A025625 A112024 A245415
Adjacent sequences: A045617 A045618 A045619 * A045621 A045622 A045623
Edited by N. J. A. Sloane, Nov 01 2007, at the suggestion of Alexander R. Povolotsky