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A147283
as a simple table
n
a(n)
1
1
2
1
3
1
4
9
5
41
6
209
7
1201
8
15001
9
432817
10
13376085
11
514375741
12
28401013633
[1,1,1,9,41,209,1201,15001,432817,13376085, 514375741,28401013633]
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Last modified May 2 10:17 EDT 2024. Contains 372196 sequences. (Running on oeis4.)