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.

A374482 Indices of records in A347381, where A347381 is the distance from n to the nearest common ancestor of n and sigma(n) in the Doudna-tree (A005940).

Table of values

n a(n)
1 1
2 3
3 7
4 17
5 23
6 29
7 31
8 47
9 53
10 71
11 83
12 89
13 97
14 107
15 127
16 139
17 149
18 167
19 179
20 191
21 199
22 233
23 239
24 241
25 269
26 293
27 337
28 349
29 359
30 373
31 383
32 419
33 431
34 449
35 461
36 479
37 499
38 569
39 571
40 577
41 587
42 599
43 643
44 647
45 701
46 719
47 769
48 809
49 839
50 857
51 863
52 881
53 967
54 971
55 1013
56 1039
57 1049
58 1091
59 1151
60 1187
61 1217
62 1223
63 1231
64 1249
65 1279

List of values

[1, 3, 7, 17, 23, 29, 31, 47, 53, 71, 83, 89, 97, 107, 127, 139, 149, 167, 179, 191, 199, 233, 239, 241, 269, 293, 337, 349, 359, 373, 383, 419, 431, 449, 461, 479, 499, 569, 571, 577, 587, 599, 643, 647, 701, 719, 769, 809, 839, 857, 863, 881, 967, 971, 1013, 1039, 1049, 1091, 1151, 1187, 1217, 1223, 1231, 1249, 1279]