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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.

A103275 a(n)=Sum( Product p_i, {Sum p_i=prime(n)}, p_i is prime ).

Table of values

n a(n)
1 2
2 3
3 11
4 29
5 226
6 603
7 4201
8 10190
9 61830
10 818624
11 1885918
12 22642064
13 115299912
14 256604379
15 1271523594
16 13524323830
17 140047498472
18 302827228170
19 3049947866219
20 14117734283755
21 30195076020892
22 294858942948153

List of values

[2, 3, 11, 29, 226, 603, 4201, 10190, 61830, 818624, 1885918, 22642064, 115299912, 256604379, 1271523594, 13524323830, 140047498472, 302827228170, 3049947866219, 14117734283755, 30195076020892, 294858942948153]

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

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