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A062534 Table by antidiagonals of coefficient of x^k in expansion of 1/((1+x)^2*(1-x)^n).

Table of values

n a(n)
0 1
1 -2
2 1
3 3
4 -1
5 1
6 -4
7 2
8 0
9 1
10 5
11 -2
12 2
13 1
14 1
15 -6
16 3
17 0
18 3
19 2
20 1
21 7
22 -3
23 3
24 3
25 5
26 3
27 1
28 -8
29 4
30 0
31 6
32 8
33 8
34 4
35 1
36 9
37 -4
38 4
39 6
40 14
41 16
42 12
43 5
44 1
45 -10
46 5
47 0
48 10
49 20
50 30
51 28
52 17
53 6
54 1
55 11
56 -5
57 5
58 10
59 30
60 50
61 58
62 45
63 23
64 7
65 1
66 -12
67 6
68 0
69 15
70 40
71 80
72 108
73 103
74 68
75 30
76 8
77 1
78 13
79 -6
80 6
81 15
82 55
83 120
84 188
85 211
86 171
87 98
88 38
89 9
90 1
91 -14
92 7
93 0
94 21
95 70
96 175

List of values

[1, -2, 1, 3, -1, 1, -4, 2, 0, 1, 5, -2, 2, 1, 1, -6, 3, 0, 3, 2, 1, 7, -3, 3, 3, 5, 3, 1, -8, 4, 0, 6, 8, 8, 4, 1, 9, -4, 4, 6, 14, 16, 12, 5, 1, -10, 5, 0, 10, 20, 30, 28, 17, 6, 1, 11, -5, 5, 10, 30, 50, 58, 45, 23, 7, 1, -12, 6, 0, 15, 40, 80, 108, 103, 68, 30, 8, 1, 13, -6, 6, 15, 55, 120, 188, 211, 171, 98, 38, 9, 1, -14, 7, 0, 21, 70, 175]