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A111960 Renewal array for central trinomial numbers A002426.

Table of values

n a(n)
0 1
1 1
2 1
3 3
4 2
5 1
6 7
7 7
8 3
9 1
10 19
11 20
12 12
13 4
14 1
15 51
16 61
17 40
18 18
19 5
20 1
21 141
22 182
23 135
24 68
25 25
26 6
27 1
28 393
29 547
30 441
31 251
32 105
33 33
34 7
35 1
36 1107
37 1640
38 1428
39 888
40 420
41 152
42 42
43 8
44 1
45 3139
46 4921
47 4572
48 3076
49 1596
50 654
51 210
52 52
53 9
54 1
55 8953
56 14762
57 14535
58 10456
59 5880
60 2652
61 966
62 280
63 63
64 10
65 1

List of values

[1, 1, 1, 3, 2, 1, 7, 7, 3, 1, 19, 20, 12, 4, 1, 51, 61, 40, 18, 5, 1, 141, 182, 135, 68, 25, 6, 1, 393, 547, 441, 251, 105, 33, 7, 1, 1107, 1640, 1428, 888, 420, 152, 42, 8, 1, 3139, 4921, 4572, 3076, 1596, 654, 210, 52, 9, 1, 8953, 14762, 14535, 10456, 5880, 2652, 966, 280, 63, 10, 1]