cp's OEIS Frontend

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.

A209563 Triangle of coefficients of polynomials u(n,x) jointly generated with A209564; see the Formula section.

Table of values

n a(n)
1 1
2 1
3 1
4 1
5 3
6 1
7 1
8 3
9 6
10 1
11 1
12 3
13 8
14 10
15 1
16 1
17 3
18 8
19 19
20 15
21 1
22 1
23 3
24 8
25 21
26 40
27 21
28 1
29 1
30 3
31 8
32 21
33 53
34 76
35 28
36 1
37 1
38 3
39 8
40 21
41 55
42 125
43 133
44 36
45 1
46 1
47 3
48 8
49 21
50 55
51 142
52 273
53 218
54 45
55 1
56 1
57 3
58 8
59 21
60 55
61 144
62 354
63 554
64 339
65 55
66 1
67 1
68 3
69 8
70 21
71 55
72 144
73 375
74 839
75 1053

List of values

[1, 1, 1, 1, 3, 1, 1, 3, 6, 1, 1, 3, 8, 10, 1, 1, 3, 8, 19, 15, 1, 1, 3, 8, 21, 40, 21, 1, 1, 3, 8, 21, 53, 76, 28, 1, 1, 3, 8, 21, 55, 125, 133, 36, 1, 1, 3, 8, 21, 55, 142, 273, 218, 45, 1, 1, 3, 8, 21, 55, 144, 354, 554, 339, 55, 1, 1, 3, 8, 21, 55, 144, 375, 839, 1053]