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.

A063531 Numbers k such that sigma(k) + 1 is a square.

Table of values

n a(n)
1 2
2 7
3 8
4 14
5 15
6 23
7 32
8 33
9 35
10 47
11 54
12 56
13 57
14 60
15 72
16 78
17 79
18 84
19 87
20 92
21 95
22 120
23 123
24 124
25 128
26 138
27 143
28 154
29 165
30 167
31 174
32 184
33 190
34 196
35 213
36 223
37 235
38 242
39 252
40 253
41 258
42 267
43 295
44 312
45 315
46 319
47 323
48 327
49 348
50 359
51 375
52 378
53 380
54 393
55 412
56 423
57 439

List of values

[2, 7, 8, 14, 15, 23, 32, 33, 35, 47, 54, 56, 57, 60, 72, 78, 79, 84, 87, 92, 95, 120, 123, 124, 128, 138, 143, 154, 165, 167, 174, 184, 190, 196, 213, 223, 235, 242, 252, 253, 258, 267, 295, 312, 315, 319, 323, 327, 348, 359, 375, 378, 380, 393, 412, 423, 439]