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.

A238905 The tau(sigma)-perfect numbers, where the set of f-perfect numbers for an arithmetical function f is defined in A066218.

Table of values

n a(n)
1 6
2 15
3 22
4 33
5 39
6 57
7 69
8 111
9 129
10 141
11 183
12 201
13 214
14 219
15 237
16 309
17 453
18 471
19 489
20 573
21 579
22 633
23 669
24 813
25 831
26 849
27 939
28 993
29 1101
30 1149
31 1191
32 1263
33 1371
34 1389
35 1461
36 1519
37 1569
38 1623
39 1641
40 1821
41 1839
42 1893
43 1942
44 1983
45 2019
46 2073
47 2199
48 2253
49 2271

List of values

[6, 15, 22, 33, 39, 57, 69, 111, 129, 141, 183, 201, 214, 219, 237, 309, 453, 471, 489, 573, 579, 633, 669, 813, 831, 849, 939, 993, 1101, 1149, 1191, 1263, 1371, 1389, 1461, 1519, 1569, 1623, 1641, 1821, 1839, 1893, 1942, 1983, 2019, 2073, 2199, 2253, 2271]