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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.

A242181 Numbers with four X's in Roman numerals.

Table of values

n a(n)
1 39
2 89
3 139
4 189
5 239
6 289
7 339
8 389
9 439
10 489
11 539
12 589
13 639
14 689
15 739
16 789
17 839
18 889
19 939
20 989
21 1039
22 1089
23 1139
24 1189
25 1239
26 1289
27 1339
28 1389
29 1439
30 1489
31 1539
32 1589
33 1639
34 1689
35 1739
36 1789
37 1839
38 1889
39 1939
40 1989
41 2039
42 2089
43 2139
44 2189
45 2239
46 2289
47 2339

List of values

[39, 89, 139, 189, 239, 289, 339, 389, 439, 489, 539, 589, 639, 689, 739, 789, 839, 889, 939, 989, 1039, 1089, 1139, 1189, 1239, 1289, 1339, 1389, 1439, 1489, 1539, 1589, 1639, 1689, 1739, 1789, 1839, 1889, 1939, 1989, 2039, 2089, 2139, 2189, 2239, 2289, 2339]

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

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