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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.

A307746 Triangle read by rows, obtained by omitting all the 1's from the triangle in A307641 (except for the first row).

Table of values

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

List of values

[1, 2, 3, 2, 2, 5, 2, 3, 7, 2, 2, 2, 3, 3, 2, 5, 11, 2, 3, 2, 13, 2, 7, 3, 5, 2, 2, 2, 2, 17, 2, 3, 3, 19, 2, 2, 5, 3, 7, 2, 11, 23, 2, 3, 2, 2, 5, 5, 2, 13, 3, 3, 3, 2, 2, 7, 29, 2, 3, 5, 31, 2, 2, 2, 2, 2, 3, 11, 2, 17, 5, 7, 2, 3, 2, 3, 37, 2, 19, 3, 13]

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