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.

A119980 Order of the following permutation on 3n+1 symbols. Write the 3n+1 symbols horizontally into a 3-column grid and read them off vertically, i.e., column after column.

Table of values

n a(n)
0 1
1 3
2 6
3 6
4 11
5 15
6 52
7 38
8 51
9 9
10 360
11 260
12 35
13 39
14 364
15 1932
16 680
17 532
18 1122
19 260
20 2415
21 3570
22 168
23 360
24 71
25 12285
26 836
27 12
28 1680
29 1155
30 858
31 936
32 7956
33 48300
34 171120
35 234
36 4428
37 235752
38 712
39 990
40 119
41 364182
42 406
43 11220
44 412920
45 25584
46 476
47 19998
48 6486

List of values

[1, 3, 6, 6, 11, 15, 52, 38, 51, 9, 360, 260, 35, 39, 364, 1932, 680, 532, 1122, 260, 2415, 3570, 168, 360, 71, 12285, 836, 12, 1680, 1155, 858, 936, 7956, 48300, 171120, 234, 4428, 235752, 712, 990, 119, 364182, 406, 11220, 412920, 25584, 476, 19998, 6486]