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.

A083973 Smallest palindromic prime containing exactly n 2's.

Table of values

n a(n)
1 2
2 12421
3 72227
4 1221221
5 3222223
6 122232221
7 322222223
8 12222122221
9 1202222222021
10 1222227222221
11 9222222222229
12 122222232222221
13 32222322222322223
14 72222222422222227
15 1202222222222222021
16 1222222226222222221
17 125222222222222222521
18 722222222202222222227

List of values

[2, 12421, 72227, 1221221, 3222223, 122232221, 322222223, 12222122221, 1202222222021, 1222227222221, 9222222222229, 122222232222221, 32222322222322223, 72222222422222227, 1202222222222222021, 1222222226222222221, 125222222222222222521, 722222222202222222227]

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

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