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.

A319086 a(n) = Sum_{k=1..n} k^2*sigma(k), where sigma is A000203.

Table of values

n a(n)
1 1
2 13
3 49
4 161
5 311
6 743
7 1135
8 2095
9 3148
10 4948
11 6400
12 10432
13 12798
14 17502
15 22902
16 30838
17 36040
18 48676
19 55896
20 72696
21 86808
22 104232
23 116928
24 151488
25 170863
26 199255
27 228415
28 272319
29 297549
30 362349
31 393101
32 457613
33 509885
34 572309
35 631109
36 749045
37 801067

List of values

[1, 13, 49, 161, 311, 743, 1135, 2095, 3148, 4948, 6400, 10432, 12798, 17502, 22902, 30838, 36040, 48676, 55896, 72696, 86808, 104232, 116928, 151488, 170863, 199255, 228415, 272319, 297549, 362349, 393101, 457613, 509885, 572309, 631109, 749045, 801067]