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.

A209571 Triangle of coefficients of polynomials u(n,x) jointly generated with A209572; see the Formula section.

Table of values

n a(n)
1 1
2 1
3 1
4 1
5 4
6 1
7 1
8 4
9 9
10 1
11 1
12 4
13 15
14 16
15 1
16 1
17 4
18 15
19 44
20 25
21 1
22 1
23 4
24 15
25 56
26 105
27 36
28 1
29 1
30 4
31 15
32 56
33 185
34 216
35 49
36 1
37 1
38 4
39 15
40 56
41 209
42 524
43 399
44 64
45 1
46 1
47 4
48 15
49 56
50 209
51 732
52 1295
53 680
54 81
55 1
56 1
57 4
58 15
59 56
60 209
61 780
62 2303
63 2864
64 1089
65 100
66 1
67 1
68 4
69 15
70 56

List of values

[1, 1, 1, 1, 4, 1, 1, 4, 9, 1, 1, 4, 15, 16, 1, 1, 4, 15, 44, 25, 1, 1, 4, 15, 56, 105, 36, 1, 1, 4, 15, 56, 185, 216, 49, 1, 1, 4, 15, 56, 209, 524, 399, 64, 1, 1, 4, 15, 56, 209, 732, 1295, 680, 81, 1, 1, 4, 15, 56, 209, 780, 2303, 2864, 1089, 100, 1, 1, 4, 15, 56]