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.

Showing 1-3 of 3 results.

A180730 22^a(n) is smallest power of 22 beginning with n.

Original entry on oeis.org

0, 1, 16, 2, 5, 14, 20, 29, 32, 3, 6, 9, 15, 18, 21, 24, 27, 30, 33, 71, 36, 1, 4, 7, 45, 10, 48, 13, 51, 16, 92, 19, 95, 22, 60, 25, 63, 28, 66, 104, 31, 69, 34, 145, 72, 37, 148, 2, 40, 151, 5, 43, 227, 8, 192, 46, 157, 11, 122, 49, 87, 14, 52, 236, 90, 17, 128, 55, 166, 20
Offset: 1

Views

Author

Daniel Mondot, Sep 18 2010

Keywords

Links

Crossrefs

Cf. A180728, A180729, A180732

A180727 Smallest power of 21 that begins with n.

Original entry on oeis.org

1, 21, 37822859361, 441, 5842587018385982521381124421, 68122318582951682301, 794280046581, 85766121, 9261, 10523016528610349434285830688358359761, 1136272165922724266740722458520501, 122694327386105632949003612841
Offset: 1

Views

Author

Daniel Mondot (dmondot(AT)gmail.com), Sep 18 2010

Keywords

Crossrefs

Cf. A180725, A180728, A180729

Programs

  • Mathematica
    With[{s=21^Range[0,100]},Table[SelectFirst[s,Take[IntegerDigits[ #], IntegerLength[ n]] == IntegerDigits[ n]&],{n,30}]]//Quiet (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Mar 24 2020 *)

A180731 Smallest power of 23 that begins with n.

Original entry on oeis.org

1, 23, 3404825447, 41426511213649, 529, 6436343, 78310985281, 865004941741938633917747707002884268046728983, 952809757913927, 10524515126174167358877236351104092889324551536161
Offset: 1

Views

Author

Daniel Mondot, Sep 18 2010

Keywords

Crossrefs

Cf. A009967, A180729, A180732.
Showing 1-3 of 3 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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