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.

A165640 Number of distinct multisets of n integers, each of which is -2, +1, or +3, such that the sum of the members of each multiset is 3.

Table of values

n a(n)
1 1
2 0
3 1
4 1
5 1
6 2
7 1
8 1
9 2
10 2
11 2
12 2
13 2
14 2
15 3
16 3
17 2
18 3
19 3
20 3
21 4
22 3
23 3
24 4
25 4
26 4
27 4
28 4
29 4
30 5
31 5
32 4
33 5
34 5
35 5
36 6
37 5
38 5
39 6
40 6
41 6
42 6
43 6
44 6
45 7
46 7
47 6
48 7
49 7
50 7
51 8
52 7
53 7
54 8
55 8
56 8
57 8
58 8
59 8
60 9
61 9
62 8
63 9
64 9
65 9
66 10
67 9
68 9
69 10
70 10
71 10
72 10
73 10
74 10
75 11
76 11
77 10
78 11
79 11
80 11
81 12
82 11
83 11
84 12
85 12
86 12
87 12
88 12
89 12
90 13
91 13
92 12

List of values

[1, 0, 1, 1, 1, 2, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 2, 3, 3, 3, 4, 3, 3, 4, 4, 4, 4, 4, 4, 5, 5, 4, 5, 5, 5, 6, 5, 5, 6, 6, 6, 6, 6, 6, 7, 7, 6, 7, 7, 7, 8, 7, 7, 8, 8, 8, 8, 8, 8, 9, 9, 8, 9, 9, 9, 10, 9, 9, 10, 10, 10, 10, 10, 10, 11, 11, 10, 11, 11, 11, 12, 11, 11, 12, 12, 12, 12, 12, 12, 13, 13, 12]