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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.

A243282 Partial sums of the characteristic function for A070003.

Table of values

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

List of values

[0, 0, 0, 1, 1, 1, 1, 2, 3, 3, 3, 3, 3, 3, 3, 4, 4, 5, 5, 5, 5, 5, 5, 5, 6, 6, 7, 7, 7, 7, 7, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 10, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 15, 15, 15, 15, 15, 15, 16]

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