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 1-5 of 5 results.

A088778 a(n)=A082783(n+1)/A082783(n).

Original entry on oeis.org

11, 91, 101, 9901, 10001, 999001, 99990001, 10000000001
Offset: 1

Views

Author

Ray Chandler, Oct 26 2003

Keywords

Comments

First 6 terms same as A088775; may be same sequence.

Crossrefs

Extensions

Two more terms from the extended A082783 - R. J. Mathar, Sep 25 2010

A082780 a(1) = 5, a(n) = smallest palindromic multiple of a(n-1) obtained by inserting digits anywhere in a(n-1).

Original entry on oeis.org

5, 55, 5005, 505505, 5005005005, 50055055055005, 50005050055005050005, 5000005005005005005005000005, 50000050055050055055055005055005000005
Offset: 1

Views

Author

Amarnath Murthy, Apr 19 2003

Keywords

Crossrefs

Extensions

Corrected by Ray Chandler, Oct 13 2003
a(8)-a(9) from Sean A. Irvine, Apr 19 2010

A082782 a(1) = 7, a(n) = smallest palindromic multiple of a(n-1) obtained by inserting digits anywhere in a(n-1).

Original entry on oeis.org

7, 77, 1771, 178871, 1788888871, 178888888888888871, 17111188118888288288881188111171
Offset: 1

Views

Author

Amarnath Murthy, Apr 19 2003

Keywords

Crossrefs

Extensions

Corrected by Ray Chandler, Oct 13 2003
a(6) from Sean A. Irvine, Apr 19 2010
a(7) from Max Alekseyev, Nov 24 2024

A082781 a(1) = 6, a(n) = smallest palindromic multiple of a(n-1) obtained by inserting digits anywhere in a(n-1).

Original entry on oeis.org

6, 66, 6006, 606606, 6006006006, 60066066066006, 60006060066006060006, 6000006006006006006006000006, 60000060066060066066066006066006000006
Offset: 1

Views

Author

Amarnath Murthy, Apr 19 2003

Keywords

Crossrefs

Extensions

Corrected by Ray Chandler, Oct 13 2003
a(8)-a(9) from Sean A. Irvine, Apr 19 2010

A088780 a(1) = 9, a(n) = smallest palindromic multiple of a(n-1) obtained by inserting digits anywhere in a(n-1).

Original entry on oeis.org

9, 99, 9009, 909909, 9009009009, 90099099099009, 90009090099009090009, 9000009009009009009009000009, 90000090099090099099099009099009000009
Offset: 1

Views

Author

Ray Chandler, Oct 26 2003

Keywords

Crossrefs

Extensions

a(8) from David Consiglio, Jr., Sep 30 2022
a(9) from Max Alekseyev, Nov 24 2024
Showing 1-5 of 5 results.