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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.

A080075 Proth numbers: of the form k*2^m + 1 for k odd, m >= 1 and 2^m > k.

Table of values

n a(n)
1 3
2 5
3 9
4 13
5 17
6 25
7 33
8 41
9 49
10 57
11 65
12 81
13 97
14 113
15 129
16 145
17 161
18 177
19 193
20 209
21 225
22 241
23 257
24 289
25 321
26 353
27 385
28 417
29 449
30 481
31 513
32 545
33 577
34 609
35 641
36 673
37 705
38 737
39 769
40 801
41 833
42 865
43 897
44 929
45 961
46 993
47 1025
48 1089
49 1153
50 1217
51 1281
52 1345
53 1409

List of values

[3, 5, 9, 13, 17, 25, 33, 41, 49, 57, 65, 81, 97, 113, 129, 145, 161, 177, 193, 209, 225, 241, 257, 289, 321, 353, 385, 417, 449, 481, 513, 545, 577, 609, 641, 673, 705, 737, 769, 801, 833, 865, 897, 929, 961, 993, 1025, 1089, 1153, 1217, 1281, 1345, 1409]