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A279556
as a simple table
n
a(n)
0
1
1
1
2
2
3
5
4
15
5
51
6
190
7
759
8
3206
9
14180
10
65203
11
309998
12
1517330
13
7619541
14
39145113
15
205261890
16
1096393056
[1,1,2,5,15,51,190,759,3206,14180,65203,309998, 1517330,7619541,39145113,205261890,1096393056]
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Last modified April 19 18:00 EDT 2024. Contains 371797 sequences. (Running on oeis4.)