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.

A195526 Numbers written with two Roman numerals.

Table of values

n a(n)
1 2
2 4
3 6
4 9
5 11
6 15
7 20
8 40
9 51
10 55
11 60
12 90
13 101
14 105
15 110
16 150
17 200
18 400
19 501
20 505
21 510
22 550
23 600
24 900
25 1001
26 1005
27 1010
28 1050
29 1100
30 1500
31 2000

List of values

[2, 4, 6, 9, 11, 15, 20, 40, 51, 55, 60, 90, 101, 105, 110, 150, 200, 400, 501, 505, 510, 550, 600, 900, 1001, 1005, 1010, 1050, 1100, 1500, 2000]

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

Content is available under The OEIS End-User License Agreement.