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.

A101303 a(n) = sigma() [A000203] applied n times to prime(n).

Table of values

n a(n)
1 3
2 7
3 28
4 60
5 360
6 1512
7 3276
8 16256
9 65528
10 261120
11 79360
12 1098240
13 13852800
14 25261824
15 79536128
16 1040179456
17 1710858240
18 13815410400
19 71687577600
20 137707384824
21 151060010112
22 1932916285440
23 4212741841200
24 508764077015040
25 24560669041920
26 26379664917984

List of values

[3, 7, 28, 60, 360, 1512, 3276, 16256, 65528, 261120, 79360, 1098240, 13852800, 25261824, 79536128, 1040179456, 1710858240, 13815410400, 71687577600, 137707384824, 151060010112, 1932916285440, 4212741841200, 508764077015040, 24560669041920, 26379664917984]

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

Content is available under The OEIS End-User License Agreement.