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.

A000742 Number of compositions of n into 4 ordered relatively prime parts.

Table of values

n a(n)
4 1
5 4
6 10
7 20
8 34
9 56
10 80
11 120
12 154
13 220
14 266
15 360
16 420
17 560
18 614
19 816
20 884
21 1120
22 1210
23 1540
24 1572
25 2020
26 2080
27 2544
28 2638
29 3276
30 3200
31 4060
32 4040
33 4840
34 4896
35 5960
36 5710
37 7140
38 6954
39 8216
40 8136
41 9880
42 9244
43 11480
44 11010
45 12824
46 12650
47 15180
48 14024
49 17276

List of values

[1, 4, 10, 20, 34, 56, 80, 120, 154, 220, 266, 360, 420, 560, 614, 816, 884, 1120, 1210, 1540, 1572, 2020, 2080, 2544, 2638, 3276, 3200, 4060, 4040, 4840, 4896, 5960, 5710, 7140, 6954, 8216, 8136, 9880, 9244, 11480, 11010, 12824, 12650, 15180, 14024, 17276]

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

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