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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.

A319194 a(n) = Sum_{k=1..n} sigma_n(k).

Table of values

n a(n)
1 1
2 6
3 38
4 373
5 4461
6 68033
7 1202753
8 24757484
9 574608039
10 14925278329
11 427729375161
12 13424413453317
13 457608305315211
14 16841852554413561
15 665483754539870667
16 28101844918556128030
17 1262901795439193700478
18 60182608193322255156347
19 3031285556584399354961535

List of values

[1, 6, 38, 373, 4461, 68033, 1202753, 24757484, 574608039, 14925278329, 427729375161, 13424413453317, 457608305315211, 16841852554413561, 665483754539870667, 28101844918556128030, 1262901795439193700478, 60182608193322255156347, 3031285556584399354961535]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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