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A155326
as a simple table
n
a(n)
4
1
5
4
6
13
7
28
8
111
9
502
10
1855
11
10932
12
85106
13
591988
14
5415550
15
64685900
16
769802654
17
11442223576
[1,4,13,28,111,502,1855,10932,85106,591988, 5415550,64685900,769802654,11442223576]
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Last modified March 28 11:59 EDT 2024. Contains 371254 sequences. (Running on oeis4.)