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.

A209747 Triangle of coefficients of polynomials u(n,x) jointly generated with A209748; see the Formula section.

Table of values

n a(n)
1 1
2 1
3 2
4 3
5 4
6 2
7 5
8 10
9 6
10 2
11 9
12 20
13 18
14 8
15 2
16 15
17 40
18 44
19 28
20 10
21 2
22 25
23 76
24 102
25 80
26 40
27 12
28 2
29 41
30 142
31 222
32 210
33 130
34 54
35 14
36 2
37 67
38 260
39 466
40 512
41 380
42 196
43 70
44 16
45 2
46 109
47 470
48 948
49 1188
50 1022
51 630
52 280
53 88
54 18
55 2
56 177
57 840
58 1884
59 2648
60 2590
61 1848
62 980

List of values

[1, 1, 2, 3, 4, 2, 5, 10, 6, 2, 9, 20, 18, 8, 2, 15, 40, 44, 28, 10, 2, 25, 76, 102, 80, 40, 12, 2, 41, 142, 222, 210, 130, 54, 14, 2, 67, 260, 466, 512, 380, 196, 70, 16, 2, 109, 470, 948, 1188, 1022, 630, 280, 88, 18, 2, 177, 840, 1884, 2648, 2590, 1848, 980]