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.

A055041 Numbers of the form 3^(2i+1)*(3*j+1).

Table of values

n a(n)
1 3
2 12
3 21
4 27
5 30
6 39
7 48
8 57
9 66
10 75
11 84
12 93
13 102
14 108
15 111
16 120
17 129
18 138
19 147
20 156
21 165
22 174
23 183
24 189
25 192
26 201
27 210
28 219
29 228
30 237
31 243
32 246
33 255
34 264
35 270
36 273
37 282
38 291
39 300
40 309
41 318
42 327
43 336
44 345
45 351
46 354
47 363
48 372
49 381
50 390
51 399

List of values

[3, 12, 21, 27, 30, 39, 48, 57, 66, 75, 84, 93, 102, 108, 111, 120, 129, 138, 147, 156, 165, 174, 183, 189, 192, 201, 210, 219, 228, 237, 243, 246, 255, 264, 270, 273, 282, 291, 300, 309, 318, 327, 336, 345, 351, 354, 363, 372, 381, 390, 399]