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.

A209565 Triangle of coefficients of polynomials u(n,x) jointly generated with A209566; 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 11
10 1
11 1
12 4
13 14
14 26
15 1
16 1
17 4
18 14
19 45
20 57
21 1
22 1
23 4
24 14
25 48
26 133
27 120
28 1
29 1
30 4
31 14
32 48
33 161
34 366
35 247
36 1
37 1
38 4
39 14
40 48
41 164
42 520
43 952
44 502
45 1
46 1
47 4
48 14
49 48
50 164
51 557
52 1604
53 2371
54 1013
55 1
56 1
57 4
58 14
59 48
60 164
61 560
62 1863
63 4724
64 5711
65 2036
66 1
67 1
68 4

List of values

[1, 1, 1, 1, 4, 1, 1, 4, 11, 1, 1, 4, 14, 26, 1, 1, 4, 14, 45, 57, 1, 1, 4, 14, 48, 133, 120, 1, 1, 4, 14, 48, 161, 366, 247, 1, 1, 4, 14, 48, 164, 520, 952, 502, 1, 1, 4, 14, 48, 164, 557, 1604, 2371, 1013, 1, 1, 4, 14, 48, 164, 560, 1863, 4724, 5711, 2036, 1, 1, 4]