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.

A209127 Triangle of coefficients of polynomials v(n,x) jointly generated with A209126; see the Formula section.

Table of values

n a(n)
1 1
2 0
3 2
4 0
5 2
6 3
7 0
8 2
9 5
10 5
11 0
12 2
13 7
14 12
15 8
16 0
17 2
18 9
19 21
20 25
21 13
22 0
23 2
24 11
25 32
26 53
27 50
28 21
29 0
30 2
31 13
32 45
33 94
34 124
35 96
36 34
37 0
38 2
39 15
40 60
41 150
42 250
43 273
44 180
45 55
46 0
47 2
48 17
49 77
50 223
51 445
52 617
53 577
54 331
55 89
56 0
57 2
58 19
59 96
60 315
61 728
62 1212
63 1444
64 1181
65 600
66 144
67 0
68 2
69 21

List of values

[1, 0, 2, 0, 2, 3, 0, 2, 5, 5, 0, 2, 7, 12, 8, 0, 2, 9, 21, 25, 13, 0, 2, 11, 32, 53, 50, 21, 0, 2, 13, 45, 94, 124, 96, 34, 0, 2, 15, 60, 150, 250, 273, 180, 55, 0, 2, 17, 77, 223, 445, 617, 577, 331, 89, 0, 2, 19, 96, 315, 728, 1212, 1444, 1181, 600, 144, 0, 2, 21]