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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.

A132014 T(n,j) for double application of an iterated mixed order Laguerre transform: Coefficients of Laguerre polynomial (-1)^n*n!*L(n,2-n,x).

Table of values

n a(n)
0 1
1 -2
2 1
3 2
4 -4
5 1
6 0
7 6
8 -6
9 1
10 0
11 0
12 12
13 -8
14 1
15 0
16 0
17 0
18 20
19 -10
20 1
21 0
22 0
23 0
24 0
25 30
26 -12
27 1
28 0
29 0
30 0
31 0
32 0
33 42
34 -14
35 1
36 0
37 0
38 0
39 0
40 0
41 0
42 56
43 -16
44 1
45 0
46 0
47 0
48 0
49 0
50 0
51 0
52 72
53 -18
54 1
55 0
56 0
57 0
58 0
59 0
60 0
61 0
62 0
63 90
64 -20
65 1
66 0
67 0
68 0
69 0
70 0
71 0
72 0
73 0
74 0
75 110
76 -22
77 1
78 0
79 0
80 0
81 0
82 0
83 0
84 0
85 0
86 0
87 0
88 132
89 -24
90 1

List of values

[1, -2, 1, 2, -4, 1, 0, 6, -6, 1, 0, 0, 12, -8, 1, 0, 0, 0, 20, -10, 1, 0, 0, 0, 0, 30, -12, 1, 0, 0, 0, 0, 0, 42, -14, 1, 0, 0, 0, 0, 0, 0, 56, -16, 1, 0, 0, 0, 0, 0, 0, 0, 72, -18, 1, 0, 0, 0, 0, 0, 0, 0, 0, 90, -20, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 110, -22, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 132, -24, 1]