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.

A307958 Coreful perfect numbers: numbers k such that csigma(k) = 2*k, where csigma(k) is the sum of the coreful divisors of k (A057723).

Table of values

n a(n)
1 36
2 180
3 252
4 392
5 396
6 468
7 612
8 684
9 828
10 1044
11 1116
12 1176
13 1260
14 1332
15 1476
16 1548
17 1692
18 1908
19 1960
20 1980
21 2124
22 2196
23 2340
24 2412
25 2556
26 2628
27 2772
28 2844
29 2988
30 3060
31 3204
32 3276
33 3420
34 3492
35 3636
36 3708
37 3852
38 3924
39 4068
40 4140
41 4284
42 4312
43 4572
44 4716
45 4788

List of values

[36, 180, 252, 392, 396, 468, 612, 684, 828, 1044, 1116, 1176, 1260, 1332, 1476, 1548, 1692, 1908, 1960, 1980, 2124, 2196, 2340, 2412, 2556, 2628, 2772, 2844, 2988, 3060, 3204, 3276, 3420, 3492, 3636, 3708, 3852, 3924, 4068, 4140, 4284, 4312, 4572, 4716, 4788]