A068891 a(1) = 1; a(n) = smallest nontrivial n-th power with property that digits alternate in parity individually as well as in concatenation with previous terms.
1, 4, 125, 81
Offset: 1
Crossrefs
Cf. A068890.
This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
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