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.

A209413 Triangle of coefficients of polynomials v(n,x) jointly generated with A209172; see the Formula section.

Table of values

n a(n)
1 1
2 1
3 2
4 1
5 3
6 4
7 1
8 5
9 7
10 8
11 1
12 6
13 17
14 15
15 16
16 1
17 8
18 23
19 49
20 31
21 32
22 1
23 9
24 39
25 72
26 129
27 63
28 64
29 1
30 11
31 48
32 150
33 201
34 321
35 127
36 128
37 1
38 12
39 70
40 198
41 501
42 522
43 769
44 255
45 256
46 1
47 14
48 82
49 338
50 699
51 1524
52 1291
53 1793
54 511
55 512
56 1
57 15
58 110
59 420
60 1375
61 2223
62 4339
63 3084
64 4097
65 1023
66 1024

List of values

[1, 1, 2, 1, 3, 4, 1, 5, 7, 8, 1, 6, 17, 15, 16, 1, 8, 23, 49, 31, 32, 1, 9, 39, 72, 129, 63, 64, 1, 11, 48, 150, 201, 321, 127, 128, 1, 12, 70, 198, 501, 522, 769, 255, 256, 1, 14, 82, 338, 699, 1524, 1291, 1793, 511, 512, 1, 15, 110, 420, 1375, 2223, 4339, 3084, 4097, 1023, 1024]