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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.

A203629 Indices of 10-gonal (decagonal) numbers which are also 9-gonal (nonagonal).

Table of values

n a(n)
1 1
2 551
3 494461
4 444025091
5 398734036921
6 358062721129631
7 321539924840371381
8 288742494443932370171
9 259290438470726428041841
10 232842525004217888449202711
11 209092328163349193100955992301
12 187764677848162571186770031883251

List of values

[1, 551, 494461, 444025091, 398734036921, 358062721129631, 321539924840371381, 288742494443932370171, 259290438470726428041841, 232842525004217888449202711, 209092328163349193100955992301, 187764677848162571186770031883251]

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

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