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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.

A134560 Triangle A051731 * A127775 (as infinite lower triangular matrices).

Table of values

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

List of values

[1, 1, 3, 1, 0, 5, 1, 3, 0, 7, 1, 0, 0, 0, 9, 1, 3, 5, 0, 0, 11, 1, 0, 0, 0, 0, 0, 13, 1, 3, 0, 7, 0, 0, 0, 15, 1, 0, 5, 0, 0, 0, 0, 0, 17, 1, 3, 0, 0, 9, 0, 0, 0, 0, 19, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 21, 1, 3, 5, 7, 0, 11, 0, 0, 0, 0, 0, 23]

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