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.

A209573 Triangle of coefficients of polynomials u(n,x) jointly generated with A209574; see the Formula section.

Table of values

n a(n)
1 1
2 1
3 1
4 2
5 4
6 1
7 3
8 9
9 9
10 1
11 4
12 17
13 29
14 16
15 1
16 5
17 28
18 69
19 74
20 25
21 1
22 6
23 42
24 138
25 224
26 160
27 36
28 1
29 7
30 59
31 245
32 541
33 613
34 307
35 49
36 1
37 8
38 79
39 399
40 1127
41 1781
42 1469
43 539
44 64
45 1
46 9
47 102
48 609
49 2111
50 4331
51 5103
52 3171
53 884
54 81
55 1
56 10
57 128
58 884
59 3649
60 9281
61 14419

List of values

[1, 1, 1, 2, 4, 1, 3, 9, 9, 1, 4, 17, 29, 16, 1, 5, 28, 69, 74, 25, 1, 6, 42, 138, 224, 160, 36, 1, 7, 59, 245, 541, 613, 307, 49, 1, 8, 79, 399, 1127, 1781, 1469, 539, 64, 1, 9, 102, 609, 2111, 4331, 5103, 3171, 884, 81, 1, 10, 128, 884, 3649, 9281, 14419]