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A137542
as a simple table
n
a(n)
0
1
1
1
2
2
3
6
4
23
5
104
6
533
7
3038
8
19128
9
133112
10
1028287
11
8859284
12
85298231
13
915617310
14
10887682031
15
142169785210
[1,1,2,6,23,104,533,3038,19128,133112,1028287, 8859284,85298231,915617310,10887682031, 142169785210]
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Last modified April 24 10:49 EDT 2024. Contains 371935 sequences. (Running on oeis4.)