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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.

A337450 Number of relatively prime compositions of n with no 1's.

Table of values

n a(n)
0 0
1 0
2 0
3 0
4 0
5 2
6 0
7 7
8 5
9 17
10 17
11 54
12 51
13 143
14 168
15 358
16 482
17 986
18 1313
19 2583
20 3663
21 6698
22 9921
23 17710
24 26489
25 46352
26 70928
27 121137
28 188220
29 317810
30 497322
31 832039
32 1313501
33 2177282
34 3459041
35 5702808
36 9094377
37 14930351
38 23895672
39 39084070
40 62721578

List of values

[0, 0, 0, 0, 0, 2, 0, 7, 5, 17, 17, 54, 51, 143, 168, 358, 482, 986, 1313, 2583, 3663, 6698, 9921, 17710, 26489, 46352, 70928, 121137, 188220, 317810, 497322, 832039, 1313501, 2177282, 3459041, 5702808, 9094377, 14930351, 23895672, 39084070, 62721578]

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

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