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.

A166874 Numbers with vertical symmetry when expressed as Roman numerals.

Table of values

n a(n)
1 1
2 2
3 3
4 5
5 10
6 19
7 20
8 30
9 1000
10 2000
11 3000

List of values

[1, 2, 3, 5, 10, 19, 20, 30, 1000, 2000, 3000]