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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.

A048923 Indices of octagonal numbers which are also 9-gonal.

Table of values

n a(n)
1 1
2 459
3 309141
4 208360351
5 140434567209
6 94652689938291
7 63795772583840701
8 42998256068818693959
9 28980760794611215887441
10 19532989777311890689441051
11 13165206129147419713467380709

List of values

[1, 459, 309141, 208360351, 140434567209, 94652689938291, 63795772583840701, 42998256068818693959, 28980760794611215887441, 19532989777311890689441051, 13165206129147419713467380709]

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

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