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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.

A170899 Triangle read by rows, obtained by subtracting 1 from the terms of A170898 and dividing by 2.

Table of values

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

List of values

[0, 0, 1, 0, 1, 2, 3, 0, 1, 2, 4, 4, 3, 6, 7, 0, 1, 2, 4, 4, 4, 8, 12, 8, 3, 6, 11, 13, 9, 15, 15, 0, 1, 2, 4, 4, 4, 8, 12, 8, 4, 8, 14, 18, 16, 20, 28, 16, 3, 6, 11, 13, 13, 21, 33, 29, 13, 15, 27, 34, 24, 34, 31, 0, 1, 2, 4, 4, 4, 8, 12, 8, 4, 8, 14, 18, 16, 20, 28, 16, 4, 8, 14]

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