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.

A318731 Number of relatively prime Lyndon compositions (aperiodic necklaces of positive integers) with sum n.

Table of values

n a(n)
1 1
2 0
3 1
4 2
5 5
6 7
7 17
8 27
9 54
10 93
11 185
12 324
13 629
14 1143
15 2175
16 4050
17 7709
18 14469
19 27593
20 52276
21 99839
22 190371
23 364721
24 698508
25 1342170
26 2580165
27 4970952
28 9585232
29 18512789
30 35787985
31 69273665
32 134211600
33 260300799
34 505278705
35 981706783

List of values

[1, 0, 1, 2, 5, 7, 17, 27, 54, 93, 185, 324, 629, 1143, 2175, 4050, 7709, 14469, 27593, 52276, 99839, 190371, 364721, 698508, 1342170, 2580165, 4970952, 9585232, 18512789, 35787985, 69273665, 134211600, 260300799, 505278705, 981706783]

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

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