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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.

A185951 Exponential Riordan array (1, x*cosh(x)).

Table of values

n a(n)
1 1
2 0
3 1
4 3
5 0
6 1
7 0
8 12
9 0
10 1
11 5
12 0
13 30
14 0
15 1
16 0
17 120
18 0
19 60
20 0
21 1
22 7
23 0
24 735
25 0
26 105
27 0
28 1
29 0
30 896
31 0
32 2800
33 0
34 168
35 0
36 1
37 9
38 0
39 15372
40 0
41 8190
42 0
43 252
44 0
45 1
46 0
47 5760
48 0
49 114240
50 0
51 20160
52 0
53 360
54 0
55 1
56 11
57 0
58 270765
59 0
60 556710
61 0
62 43890
63 0
64 495
65 0
66 1
67 0
68 33792
69 0
70 4118400
71 0
72 2084544
73 0
74 87120
75 0
76 660
77 0
78 1

List of values

[1, 0, 1, 3, 0, 1, 0, 12, 0, 1, 5, 0, 30, 0, 1, 0, 120, 0, 60, 0, 1, 7, 0, 735, 0, 105, 0, 1, 0, 896, 0, 2800, 0, 168, 0, 1, 9, 0, 15372, 0, 8190, 0, 252, 0, 1, 0, 5760, 0, 114240, 0, 20160, 0, 360, 0, 1, 11, 0, 270765, 0, 556710, 0, 43890, 0, 495, 0, 1, 0, 33792, 0, 4118400, 0, 2084544, 0, 87120, 0, 660, 0, 1]