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.

A279095 Smallest k such that sigma(2^(k*n)) is prime.

Table of values

n a(n)
1 1
2 1
3 2
4 1
5 6
6 1
7 18
8 2
9 2
10 3
11 8
12 1
13 40
14 9
15 2
16 1
17 177728
18 1
19 120
20 3
21 6
22 4
23 32906
24 95
25 868
26 20
27 1648
28 346
29 1996040
30 1
31 700
32 623
33 134
34 88864
35 284
36 1236
37 821688
38 60

List of values

[1, 1, 2, 1, 6, 1, 18, 2, 2, 3, 8, 1, 40, 9, 2, 1, 177728, 1, 120, 3, 6, 4, 32906, 95, 868, 20, 1648, 346, 1996040, 1, 700, 623, 134, 88864, 284, 1236, 821688, 60]