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.

A062726 Numbers that do not contain repeated letters when written in Roman numerals.

Table of values

n a(n)
1 1
2 4
3 5
4 6
5 9
6 10
7 11
8 14
9 15
10 16
11 40
12 41
13 44
14 45
15 46
16 50
17 51
18 54
19 55
20 56
21 59
22 60
23 61
24 64
25 65
26 66
27 90
28 91
29 94
30 95
31 96
32 100
33 101
34 104
35 105
36 106
37 109
38 110
39 111
40 114
41 115
42 116
43 140
44 141
45 144
46 145
47 146
48 150
49 151
50 154
51 155
52 156
53 159
54 160
55 161
56 164
57 165
58 166
59 400
60 401
61 404

List of values

[1, 4, 5, 6, 9, 10, 11, 14, 15, 16, 40, 41, 44, 45, 46, 50, 51, 54, 55, 56, 59, 60, 61, 64, 65, 66, 90, 91, 94, 95, 96, 100, 101, 104, 105, 106, 109, 110, 111, 114, 115, 116, 140, 141, 144, 145, 146, 150, 151, 154, 155, 156, 159, 160, 161, 164, 165, 166, 400, 401, 404]

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

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