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.

A331816 Irregular triangle (read by rows) of coefficients T(n,k) of polynomials p(n,x) = Sum_{k=0..2*n} T(n,k) * x^k = (-1)^n * e^(x^3/3) * (((d/dx)^n) e^(-x^3/3)) for n >= 0 and 0 <= k <= 2*n.

Table of values

n a(n)
0 1
1 0
2 0
3 1
4 0
5 -2
6 0
7 0
8 1
9 2
10 0
11 0
12 -6
13 0
14 0
15 1
16 0
17 0
18 20
19 0
20 0
21 -12
22 0
23 0
24 1
25 0
26 -40
27 0
28 0
29 80
30 0
31 0
32 -20
33 0
34 0
35 1
36 40
37 0
38 0
39 -360
40 0
41 0
42 220
43 0
44 0
45 -30
46 0
47 0
48 1
49 0
50 0
51 1120
52 0
53 0
54 -1680
55 0
56 0
57 490
58 0
59 0
60 -42
61 0
62 0
63 1
64 0
65 -2240
66 0
67 0
68 9520
69 0
70 0
71 -5600
72 0
73 0
74 952
75 0
76 0
77 -56
78 0
79 0
80 1

List of values

[1, 0, 0, 1, 0, -2, 0, 0, 1, 2, 0, 0, -6, 0, 0, 1, 0, 0, 20, 0, 0, -12, 0, 0, 1, 0, -40, 0, 0, 80, 0, 0, -20, 0, 0, 1, 40, 0, 0, -360, 0, 0, 220, 0, 0, -30, 0, 0, 1, 0, 0, 1120, 0, 0, -1680, 0, 0, 490, 0, 0, -42, 0, 0, 1, 0, -2240, 0, 0, 9520, 0, 0, -5600, 0, 0, 952, 0, 0, -56, 0, 0, 1]