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.

A209701 Triangle of coefficients of polynomials u(n,x) jointly generated with A209702; see the Formula section.

Table of values

n a(n)
1 1
2 0
3 2
4 0
5 2
6 5
7 0
8 3
9 7
10 12
11 0
12 4
13 11
14 23
15 29
16 0
17 5
18 16
19 41
20 70
21 70
22 0
23 6
24 22
25 66
26 140
27 204
28 169
29 0
30 7
31 29
32 99
33 247
34 455
35 577
36 408
37 0
38 8
39 37
40 141
41 401
42 875
43 1423
44 1597
45 985
46 0
47 9
48 46
49 193
50 613
51 1529
52 2965
53 4321
54 4348
55 2378
56 0
57 10
58 56
59 256
60 895
61 2495
62 5549

List of values

[1, 0, 2, 0, 2, 5, 0, 3, 7, 12, 0, 4, 11, 23, 29, 0, 5, 16, 41, 70, 70, 0, 6, 22, 66, 140, 204, 169, 0, 7, 29, 99, 247, 455, 577, 408, 0, 8, 37, 141, 401, 875, 1423, 1597, 985, 0, 9, 46, 193, 613, 1529, 2965, 4321, 4348, 2378, 0, 10, 56, 256, 895, 2495, 5549]