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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.

A347731 Number of compositions (ordered partitions) of n into at most 3 triangular numbers.

Table of values

n a(n)
0 1
1 1
2 1
3 2
4 2
5 3
6 2
7 5
8 3
9 3
10 7
11 2
12 7
13 5
14 6
15 4
16 7
17 9
18 3
19 12
20 1
21 9
22 11
23 6
24 8
25 8
26 9
27 8
28 13
29 2
30 11
31 13
32 12
33 6
34 11
35 9
36 6
37 20
38 5
39 14
40 12
41 9
42 12
43 11
44 12
45 11
46 16
47 9
48 11
49 20
50 6
51 10
52 27
53 6
54 12
55 9
56 12
57 20
58 17
59 15
60 8
61 23
62 9
63 13
64 14
65 11
66 21
67 23
68 9
69 8
70 23
71 15
72 18
73 17
74 12
75 15

List of values

[1, 1, 1, 2, 2, 3, 2, 5, 3, 3, 7, 2, 7, 5, 6, 4, 7, 9, 3, 12, 1, 9, 11, 6, 8, 8, 9, 8, 13, 2, 11, 13, 12, 6, 11, 9, 6, 20, 5, 14, 12, 9, 12, 11, 12, 11, 16, 9, 11, 20, 6, 10, 27, 6, 12, 9, 12, 20, 17, 15, 8, 23, 9, 13, 14, 11, 21, 23, 9, 8, 23, 15, 18, 17, 12, 15]

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