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.

A328609 Number of compositions of n whose circularly adjacent parts are relatively prime.

Table of values

n a(n)
0 1
1 1
2 1
3 3
4 6
5 12
6 23
7 42
8 81
9 150
10 284
11 534
12 1004
13 1882
14 3532
15 6630
16 12459
17 23406
18 43951
19 82537
20 154998
21 291087
22 546673
23 1026686
24 1928117
25 3621016
26 6800299
27 12771085
28 23984328
29 45042958
30 84591338
31 158863806
32 298348612
33 560303341
34 1052258401
35 1976157509

List of values

[1, 1, 1, 3, 6, 12, 23, 42, 81, 150, 284, 534, 1004, 1882, 3532, 6630, 12459, 23406, 43951, 82537, 154998, 291087, 546673, 1026686, 1928117, 3621016, 6800299, 12771085, 23984328, 45042958, 84591338, 158863806, 298348612, 560303341, 1052258401, 1976157509]

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

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