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.

A097418 Triangle of coefficients of a certain sequence of polynomials f_n(x) arising in connection with deformations of coordinate rings of type D Kleinian singularities.

Table of values

n a(n)
1 1
2 2
3 0
4 3
5 2
6 0
7 4
8 8
9 8
10 0
11 5
12 20
13 56
14 56
15 0
16 6
17 40
18 216
19 608
20 608
21 0
22 7
23 70
24 616
25 3352
26 9440
27 9440
28 0
29 8
30 112
31 1456
32 12928
33 70400
34 198272
35 198272
36 0
37 9
38 168
39 3024
40 39696
41 352768
42 1921152
43 5410688
44 5410688
45 0
46 10
47 240
48 5712
49 103872
50 1364800
51 12129664
52 66057856
53 186043904
54 186043904
55 0

List of values

[1, 2, 0, 3, 2, 0, 4, 8, 8, 0, 5, 20, 56, 56, 0, 6, 40, 216, 608, 608, 0, 7, 70, 616, 3352, 9440, 9440, 0, 8, 112, 1456, 12928, 70400, 198272, 198272, 0, 9, 168, 3024, 39696, 352768, 1921152, 5410688, 5410688, 0, 10, 240, 5712, 103872, 1364800, 12129664, 66057856, 186043904, 186043904, 0]