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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.

A131782 Triangle read by rows: (A004736 * A000012) + (A000012 * A004736) - A000012 as infinite lower triangular matrices.

Table of values

n a(n)
1 1
2 5
3 1
4 11
5 5
6 1
7 19
8 11
9 5
10 1
11 29
12 19
13 11
14 5
15 1
16 41
17 29
18 19
19 11
20 5
21 1
22 55
23 41
24 29
25 19
26 11
27 5
28 1
29 71
30 55
31 41
32 29
33 19
34 11
35 5
36 1
37 89
38 71
39 55
40 41
41 29
42 19
43 11
44 5
45 1
46 109
47 89
48 71
49 55
50 41
51 29
52 19
53 11
54 5
55 1
56 131
57 109
58 89
59 71
60 55
61 41
62 29
63 19
64 11
65 5
66 1
67 155
68 131
69 109
70 89
71 71
72 55
73 41
74 29
75 19
76 11
77 5
78 1

List of values

[1, 5, 1, 11, 5, 1, 19, 11, 5, 1, 29, 19, 11, 5, 1, 41, 29, 19, 11, 5, 1, 55, 41, 29, 19, 11, 5, 1, 71, 55, 41, 29, 19, 11, 5, 1, 89, 71, 55, 41, 29, 19, 11, 5, 1, 109, 89, 71, 55, 41, 29, 19, 11, 5, 1, 131, 109, 89, 71, 55, 41, 29, 19, 11, 5, 1, 155, 131, 109, 89, 71, 55, 41, 29, 19, 11, 5, 1]

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