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.

A277521 Numbers k such that number of divisors of k and sum of divisors of k divides product of divisors of k and the average of the divisors of k is an integer.

Table of values

n a(n)
1 1
2 6
3 30
4 66
5 102
6 210
7 270
8 318
9 330
10 420
11 462
12 510
13 546
14 570
15 642
16 672
17 690
18 714
19 840
20 870
21 924
22 930
23 966
24 1122
25 1320
26 1410
27 1428
28 1518
29 1590
30 1638
31 1722
32 1770
33 1890
34 1932
35 2130
36 2226
37 2280
38 2310
39 2346
40 2370
41 2670
42 2730
43 2760
44 2838
45 2970
46 2982
47 3102
48 3162
49 3210
50 3360
51 3444
52 3486
53 3498
54 3570
55 3720
56 3780
57 3948
58 3990

List of values

[1, 6, 30, 66, 102, 210, 270, 318, 330, 420, 462, 510, 546, 570, 642, 672, 690, 714, 840, 870, 924, 930, 966, 1122, 1320, 1410, 1428, 1518, 1590, 1638, 1722, 1770, 1890, 1932, 2130, 2226, 2280, 2310, 2346, 2370, 2670, 2730, 2760, 2838, 2970, 2982, 3102, 3162, 3210, 3360, 3444, 3486, 3498, 3570, 3720, 3780, 3948, 3990]