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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.

A210563 Triangle of coefficients of polynomials u(n,x) jointly generated with A210564; see the Formula section.

Table of values

n a(n)
1 1
2 1
3 2
4 1
5 3
6 5
7 1
8 3
9 10
10 13
11 1
12 3
13 11
14 32
15 34
16 1
17 3
18 11
19 40
20 99
21 89
22 1
23 3
24 11
25 41
26 141
27 299
28 233
29 1
30 3
31 11
32 41
33 152
34 482
35 887
36 610
37 1
38 3
39 11
40 41
41 153
42 556
43 1604
44 2595
45 1597
46 1
47 3
48 11
49 41
50 153
51 570
52 1998
53 5217
54 7508
55 4181
56 1
57 3
58 11
59 41
60 153
61 571
62 2113
63 7042

List of values

[1, 1, 2, 1, 3, 5, 1, 3, 10, 13, 1, 3, 11, 32, 34, 1, 3, 11, 40, 99, 89, 1, 3, 11, 41, 141, 299, 233, 1, 3, 11, 41, 152, 482, 887, 610, 1, 3, 11, 41, 153, 556, 1604, 2595, 1597, 1, 3, 11, 41, 153, 570, 1998, 5217, 7508, 4181, 1, 3, 11, 41, 153, 571, 2113, 7042]