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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.

A262657 Minimal nested palindromic base-7 primes with seed 1; see Comments.

Table of values

n a(n)
1 1
2 212
3 42124
4 204212402
5 2220421240222
6 222204212402222
7 2222220421240222222
8 12222222042124022222221
9 3122222220421240222222213
10 331222222204212402222222133
11 53312222222042124022222221335
12 165331222222204212402222222133561

List of values

[1, 212, 42124, 204212402, 2220421240222, 222204212402222, 2222220421240222222, 12222222042124022222221, 3122222220421240222222213, 331222222204212402222222133, 53312222222042124022222221335, 165331222222204212402222222133561]

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

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