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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.

A210868 Triangle of coefficients of polynomials u(n,x) jointly generated with A210869; see the Formula section.

Table of values

n a(n)
1 1
2 1
3 1
4 1
5 1
6 2
7 1
8 2
9 2
10 3
11 1
12 2
13 5
14 3
15 5
16 1
17 3
18 5
19 10
20 5
21 8
22 1
23 3
24 9
25 10
26 20
27 8
28 13
29 1
30 4
31 9
32 22
33 20
34 38
35 13
36 21
37 1
38 4
39 14
40 22
41 51
42 38
43 71
44 21
45 34
46 1
47 5
48 14
49 40
50 51
51 111
52 71
53 130
54 34
55 55
56 1
57 5
58 20
59 40
60 105
61 111
62 233
63 130
64 235
65 55
66 89
67 1
68 6
69 20
70 65
71 105
72 256
73 233
74 474

List of values

[1, 1, 1, 1, 1, 2, 1, 2, 2, 3, 1, 2, 5, 3, 5, 1, 3, 5, 10, 5, 8, 1, 3, 9, 10, 20, 8, 13, 1, 4, 9, 22, 20, 38, 13, 21, 1, 4, 14, 22, 51, 38, 71, 21, 34, 1, 5, 14, 40, 51, 111, 71, 130, 34, 55, 1, 5, 20, 40, 105, 111, 233, 130, 235, 55, 89, 1, 6, 20, 65, 105, 256, 233, 474]

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