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.

A354813 Positions of +3's in A346242.

Table of values

n a(n)
1 21
2 33
3 39
4 51
5 57
6 69
7 87
8 93
9 111
10 123
11 129
12 130
13 141
14 159
15 177
16 183
17 190
18 201
19 213
20 219
21 231
22 237
23 249
24 267
25 291
26 303
27 309
28 310
29 321
30 327
31 339
32 370
33 381
34 393
35 411
36 417
37 430
38 447
39 453
40 471
41 489
42 501
43 519
44 537
45 543
46 573
47 579
48 591
49 597
50 610
51 633
52 669
53 670
54 681
55 687
56 699
57 717
58 723
59 730
60 753
61 771
62 789
63 790
64 807
65 813

List of values

[21, 33, 39, 51, 57, 69, 87, 93, 111, 123, 129, 130, 141, 159, 177, 183, 190, 201, 213, 219, 231, 237, 249, 267, 291, 303, 309, 310, 321, 327, 339, 370, 381, 393, 411, 417, 430, 447, 453, 471, 489, 501, 519, 537, 543, 573, 579, 591, 597, 610, 633, 669, 670, 681, 687, 699, 717, 723, 730, 753, 771, 789, 790, 807, 813]