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A115115 as a simple table

n a(n)
1 2
2 4
3 8
4 24
5 70
6 232
7 782
8 2744
9 9710
10 34990
11 127102
12 466152
13 1720742
14 6391714
15 23860936
16 89479864
17 336860182
18 1272587758
19 4822419422
20 18325211326
21 69810262088
22 266548336954
23 1019836872142
24 3909374909672
25 15011998757958

[2,4,8,24,70,232,782,2744,9710,34990,127102,
 466152,1720742,6391714,23860936,89479864,
 336860182,1272587758,4822419422,18325211326,
 69810262088,266548336954,1019836872142,
 3909374909672,15011998757958]

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Last modified May 11 00:12 EDT 2024. Contains 372388 sequences. (Running on oeis4.)