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 1-2 of 2 results.

A067505 Powers of 8 with digit sum also a power of 8.

Original entry on oeis.org

1, 8, 512, 68719476736, 76957043352332967211482500195592995713046365762627825523336510555167425334955489475418488779072100860950445293568
Offset: 1

Views

Author

Amarnath Murthy, Feb 11 2002

Keywords

Comments

Next two terms are 8^1014 and 8^64578.

Crossrefs

Cf. A067499, A067500, A067501, A067502, A067503, A067504, A067505, A067506, A067507, A067508, A067509, A067510, A067511.

Extensions

Extended and corrected by Sascha Kurz, Mar 18 2002
Edited by N. J. A. Sloane at the suggestion of Andrew S. Plewe, May 27 2007

A067511 Powers of 7 with digit sum divisible by 7.

Original entry on oeis.org

7, 2401, 117649, 40353607, 1977326743, 9387480337647754305649, 65712362363534280139543, 459986536544739960976801, 15286700631942576193765185769276826401, 5243338316756303634461458718861951455543, 12589255298531885026341962383987545444758743
Offset: 1

Views

Author

Amarnath Murthy, Feb 11 2002

Keywords

Links

Crossrefs

Intersection of A000420 and A273159.
Cf. A067499, A067500, A067501, A067502, A067503, A067504, A067505, A067506, A067507, A067508, A067509, A067510.

Programs

  • PARI
    lista(n)={my(L=List(),k=0);while(#LAndrew Howroyd, Sep 17 2024

Extensions

More terms from Sascha Kurz, Mar 18 2002
Offset changed and a(10) onwards from Andrew Howroyd, Sep 17 2024
Showing 1-2 of 2 results.

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

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