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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.

A238015 Denominator of (2*n+1)!*8*Bernoulli(2*n,1/2).

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 1
9 1
10 1
11 1
12 1
13 1
14 1
15 2
16 1
17 1
18 1
19 1
20 1
21 1
22 1
23 2
24 1
25 1
26 1
27 2
28 1
29 2
30 2
31 4
32 1
33 1
34 1
35 1
36 1
37 1
38 1
39 2
40 1
41 1
42 1
43 2
44 1
45 2
46 2
47 4
48 1
49 1
50 1
51 2
52 1
53 2
54 2
55 4
56 1
57 2
58 2
59 4
60 2
61 4
62 4
63 8
64 1
65 1
66 1
67 1
68 1
69 1
70 1
71 2
72 1
73 1
74 1
75 2
76 1
77 2
78 2
79 4
80 1
81 1
82 1
83 2
84 1
85 2
86 2
87 4
88 1
89 2
90 2
91 4
92 2
93 4
94 4
95 8
96 1
97 1
98 1
99 2
100 1

List of values

[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 2, 2, 4, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 2, 2, 4, 1, 1, 1, 2, 1, 2, 2, 4, 1, 2, 2, 4, 2, 4, 4, 8, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 2, 2, 4, 1, 1, 1, 2, 1, 2, 2, 4, 1, 2, 2, 4, 2, 4, 4, 8, 1, 1, 1, 2, 1]