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.

A082771 Triangular array, read by rows: t(n,k) = Sum_{d|n} d^k, 0 <= k < n.

Table of values

n a(n)
1 1
2 2
3 3
4 2
5 4
6 10
7 3
8 7
9 21
10 73
11 2
12 6
13 26
14 126
15 626
16 4
17 12
18 50
19 252
20 1394
21 8052
22 2
23 8
24 50
25 344
26 2402
27 16808
28 117650
29 4
30 15
31 85
32 585
33 4369
34 33825
35 266305
36 2113665
37 3
38 13
39 91
40 757
41 6643
42 59293
43 532171
44 4785157
45 43053283
46 4
47 18
48 130
49 1134
50 10642
51 103158
52 1015690
53 10078254
54 100390882
55 1001953638

List of values

[1, 2, 3, 2, 4, 10, 3, 7, 21, 73, 2, 6, 26, 126, 626, 4, 12, 50, 252, 1394, 8052, 2, 8, 50, 344, 2402, 16808, 117650, 4, 15, 85, 585, 4369, 33825, 266305, 2113665, 3, 13, 91, 757, 6643, 59293, 532171, 4785157, 43053283, 4, 18, 130, 1134, 10642, 103158, 1015690, 10078254, 100390882, 1001953638]