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A001338 as a simple table

n a(n)
0 1
1 0
2 2
3 7
4 23
5 88
6 414
7 2371
8 16071
9 125672
10 1112082
11 10976183
12 119481295
13 1421542640
14 18348340126
15 255323504931
16 3809950977007
17 60683990530224
18 1027542662934914
19 18430998766219335
20 349096664728623335
21 6962409983976703336
22 145841989688186383358

[1,0,2,7,23,88,414,2371,16071,125672,1112082,
 10976183,119481295,1421542640,18348340126,
 255323504931,3809950977007,60683990530224,
 1027542662934914,18430998766219335,
 349096664728623335,6962409983976703336,
 145841989688186383358]

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Last modified April 16 19:48 EDT 2024. Contains 371754 sequences. (Running on oeis4.)