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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.

A347703 Number of compositions (ordered partitions) of n into at most 4 prime parts (counting 1 as a prime).

Table of values

n a(n)
0 1
1 1
2 2
3 4
4 7
5 13
6 20
7 28
8 36
9 43
10 53
11 60
12 68
13 70
14 79
15 84
16 103
17 105
18 124
19 118
20 147
21 144
22 183
23 165
24 207
25 180
26 243
27 213
28 280
29 215
30 290
31 222
32 334
33 258
34 377
35 260
36 411
37 299
38 471
39 324
40 491
41 302
42 530
43 346
44 595
45 377
46 639
47 380
48 705
49 435
50 766
51 463
52 819
53 456
54 886
55 506
56 942

List of values

[1, 1, 2, 4, 7, 13, 20, 28, 36, 43, 53, 60, 68, 70, 79, 84, 103, 105, 124, 118, 147, 144, 183, 165, 207, 180, 243, 213, 280, 215, 290, 222, 334, 258, 377, 260, 411, 299, 471, 324, 491, 302, 530, 346, 595, 377, 639, 380, 705, 435, 766, 463, 819, 456, 886, 506, 942]

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

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