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A175896 as a simple table

n a(n)
0 1
1 2
2 9
3 57
4 396
5 2948
6 23016
7 185838
8 1539066
9 13001677
10 111600446
11 970550862
12 8533427593
13 75728797781
14 677427655798
15 6102015206945
16 55299451023428
17 503847366381836
18 4612663920303329
19 42409513650507927
20 391425863599784588

[1,2,9,57,396,2948,23016,185838,1539066,13001677,
 111600446,970550862,8533427593,75728797781,
 677427655798,6102015206945,55299451023428,
 503847366381836,4612663920303329,
 42409513650507927,391425863599784588]

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Last modified October 25 03:28 EDT 2021. Contains 348237 sequences. (Running on oeis4.)