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.

A167606 Number of compositions of n where each pair of adjacent parts is relatively prime.

Table of values

n a(n)
0 1
1 1
2 2
3 4
4 7
5 14
6 25
7 48
8 90
9 168
10 316
11 594
12 1116
13 2096
14 3935
15 7388
16 13877
17 26061
18 48944
19 91919
20 172623
21 324188
22 608827
23 1143390
24 2147309
25 4032677
26 7573426
27 14223008
28 26711028
29 50163722
30 94208254
31 176924559
32 332267039
33 624002605
34 1171886500
35 2200820905

List of values

[1, 1, 2, 4, 7, 14, 25, 48, 90, 168, 316, 594, 1116, 2096, 3935, 7388, 13877, 26061, 48944, 91919, 172623, 324188, 608827, 1143390, 2147309, 4032677, 7573426, 14223008, 26711028, 50163722, 94208254, 176924559, 332267039, 624002605, 1171886500, 2200820905]

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

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