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.

A318745 Number of Lyndon compositions (aperiodic necklaces of positive integers) with sum n and adjacent parts (including the last with the first part) being coprime.

Table of values

n a(n)
1 1
2 1
3 2
4 3
5 5
6 7
7 12
8 19
9 32
10 53
11 94
12 158
13 279
14 480
15 847
16 1487
17 2647
18 4676
19 8349
20 14865
21 26630
22 47700
23 85778
24 154290
25 278318
26 502437
27 908880
28 1645713
29 2984546
30 5417743
31 9847189
32 17914494
33 32625523
34 59467893
35 108493134
36 198089610
37 361965238
38 661883231
39 1211161991

List of values

[1, 1, 2, 3, 5, 7, 12, 19, 32, 53, 94, 158, 279, 480, 847, 1487, 2647, 4676, 8349, 14865, 26630, 47700, 85778, 154290, 278318, 502437, 908880, 1645713, 2984546, 5417743, 9847189, 17914494, 32625523, 59467893, 108493134, 198089610, 361965238, 661883231, 1211161991]

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

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