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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.

A343087 a(n) is the smallest prime p such that tau(p-1) = 2^n.

Table of values

n a(n)
1 3
2 7
3 31
4 211
5 1321
6 7561
7 120121
8 1580041
9 24864841
10 328648321
11 7558911361
12 162023621761
13 5022732274561
14 93163582512001
15 4083134943888001
16 151075992923856001
17 5236072827921936001
18 188391763176048432001
19 8854412869274276304001
20 469283882071536644112001
21 29844457947060064452144001
22 1917963226026370264485744001

List of values

[3, 7, 31, 211, 1321, 7561, 120121, 1580041, 24864841, 328648321, 7558911361, 162023621761, 5022732274561, 93163582512001, 4083134943888001, 151075992923856001, 5236072827921936001, 188391763176048432001, 8854412869274276304001, 469283882071536644112001, 29844457947060064452144001, 1917963226026370264485744001]

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

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