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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.

A340990 a(n) is the (2n)-th term of the n-fold self-convolution of the primes.

Table of values

n a(n)
0 1
1 3
2 29
3 291
4 3121
5 34123
6 379853
7 4280251
8 48681569
9 557686227
10 6425630909
11 74384480019
12 864461820049
13 10079577033243
14 117859582680813
15 1381492094548651
16 16227770995740865
17 190979248798795427
18 2251327736286726749
19 26579050506578504195
20 314212180691846338801

List of values

[1, 3, 29, 291, 3121, 34123, 379853, 4280251, 48681569, 557686227, 6425630909, 74384480019, 864461820049, 10079577033243, 117859582680813, 1381492094548651, 16227770995740865, 190979248798795427, 2251327736286726749, 26579050506578504195, 314212180691846338801]

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

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