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.

A071852 Smallest k such that 2^k + 1 has exactly n distinct prime factors.

Table of values

n a(n)
1 1
2 5
3 14
4 18
5 30
6 42
7 99
8 114
9 78
10 90
11 175
12 150
13 324
14 210
15 315
16 234
17 270
18 585
19 405
20 765
21 390
22 450
23 510
24 1150
25 690
26 630
27 930
28 858
29 810
30 1155
31 966
32 1386

List of values

[1, 5, 14, 18, 30, 42, 99, 114, 78, 90, 175, 150, 324, 210, 315, 234, 270, 585, 405, 765, 390, 450, 510, 1150, 690, 630, 930, 858, 810, 1155, 966, 1386]