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.

A209765 Triangle of coefficients of polynomials u(n,x) jointly generated with A209766; see the Formula section.

Table of values

n a(n)
1 1
2 1
3 2
4 1
5 5
6 5
7 1
8 5
9 15
10 12
11 1
12 5
13 21
14 45
15 29
16 1
17 5
18 21
19 77
20 129
21 70
22 1
23 5
24 21
25 89
26 265
27 361
28 169
29 1
30 5
31 21
32 89
33 353
34 865
35 991
36 408
37 1
38 5
39 21
40 89
41 377
42 1325
43 2717
44 2681
45 985
46 1
47 5
48 21
49 89
50 377
51 1549
52 4733
53 8281
54 7169
55 2378
56 1
57 5
58 21
59 89
60 377
61 1597
62 6125

List of values

[1, 1, 2, 1, 5, 5, 1, 5, 15, 12, 1, 5, 21, 45, 29, 1, 5, 21, 77, 129, 70, 1, 5, 21, 89, 265, 361, 169, 1, 5, 21, 89, 353, 865, 991, 408, 1, 5, 21, 89, 377, 1325, 2717, 2681, 985, 1, 5, 21, 89, 377, 1549, 4733, 8281, 7169, 2378, 1, 5, 21, 89, 377, 1597, 6125]