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A155309
as a simple table
n
a(n)
5
1
6
7
7
19
8
52
9
196
10
938
11
5406
12
33082
13
270615
14
2652565
15
30092725
16
403696211
17
6603268906
[1,7,19,52,196,938,5406,33082,270615,2652565, 30092725,403696211,6603268906]
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Last modified April 24 15:18 EDT 2024. Contains 371960 sequences. (Running on oeis4.)