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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.

A006047 Number of entries in n-th row of Pascal's triangle not divisible by 3.

Table of values

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

List of values

[1, 2, 3, 2, 4, 6, 3, 6, 9, 2, 4, 6, 4, 8, 12, 6, 12, 18, 3, 6, 9, 6, 12, 18, 9, 18, 27, 2, 4, 6, 4, 8, 12, 6, 12, 18, 4, 8, 12, 8, 16, 24, 12, 24, 36, 6, 12, 18, 12, 24, 36, 18, 36, 54, 3, 6, 9, 6, 12, 18, 9, 18, 27, 6, 12, 18, 12, 24, 36, 18, 36, 54, 9, 18, 27, 18, 36, 54, 27, 54]

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