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.

A383891 a(n) is the length of chunks of the prime number sequence such that each chunk’s sum of reciprocals is no less than 1/n, chunks being consecutive and of minimal length, for n>=2.

Table of values

n a(n)
2 1
3 1
4 2
5 3
6 5
7 8
8 13
9 22
10 36
11 60
12 100
13 168
14 284
15 482
16 819
17 1397
18 2389
19 4096
20 7044
21 12137
22 20956
23 36259

List of values

[1, 1, 2, 3, 5, 8, 13, 22, 36, 60, 100, 168, 284, 482, 819, 1397, 2389, 4096, 7044, 12137, 20956, 36259]

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

Content is available under The OEIS End-User License Agreement.