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.

A238711 Product of all primes p such that 2n - p is also prime.

Table of values

n a(n)
2 2
3 3
4 15
5 105
6 35
7 231
8 2145
9 5005
10 4641
11 53295
12 1616615
13 119301
14 21505
15 7436429
16 21489
17 57998985
18 3038795305
19 4123
20 13844919
21 10393190665
22 12838371
23 299859855
24 7292509103495
25 12023917269
26 70691995
27 37198413949697
28 62483343
29 2769282065
30 98755025688454681

List of values

[2, 3, 15, 105, 35, 231, 2145, 5005, 4641, 53295, 1616615, 119301, 21505, 7436429, 21489, 57998985, 3038795305, 4123, 13844919, 10393190665, 12838371, 299859855, 7292509103495, 12023917269, 70691995, 37198413949697, 62483343, 2769282065, 98755025688454681]

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

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