cp's OEIS Frontend

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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A385516 Perfect powers whose digits are in strictly decreasing order.

Original entry on oeis.org

1, 4, 8, 9, 32, 64, 81, 841, 961
Offset: 1

Views

Author

Stefano Spezia, Jul 01 2025

Keywords

Crossrefs

Cf. A001597, A009995, A355060, A355062, A355063, A385517.

Programs

  • Mathematica
    perfectPowerQ[n_] := n==1 || GCD @@ FactorInteger[n][[All, 2]] > 1; (* A001597 *) Select[Range[1000], perfectPowerQ[#] && Max[Differences[IntegerDigits[#]]]<0 &]
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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