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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.

A161365 a(n) = 3/2 + 5*n - 5*(-1)^n/2.

Table of values

n a(n)
1 9
2 9
3 19
4 19
5 29
6 29
7 39
8 39
9 49
10 49
11 59
12 59
13 69
14 69
15 79
16 79
17 89
18 89
19 99
20 99
21 109
22 109
23 119
24 119
25 129
26 129
27 139
28 139
29 149
30 149
31 159
32 159
33 169
34 169
35 179
36 179
37 189
38 189
39 199
40 199
41 209
42 209
43 219
44 219
45 229
46 229
47 239
48 239
49 249
50 249
51 259
52 259
53 269
54 269
55 279
56 279
57 289

List of values

[9, 9, 19, 19, 29, 29, 39, 39, 49, 49, 59, 59, 69, 69, 79, 79, 89, 89, 99, 99, 109, 109, 119, 119, 129, 129, 139, 139, 149, 149, 159, 159, 169, 169, 179, 179, 189, 189, 199, 199, 209, 209, 219, 219, 229, 229, 239, 239, 249, 249, 259, 259, 269, 269, 279, 279, 289]

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

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