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A129429 as a simple table

n a(n)
1 1
2 3
3 7
4 20
5 56
6 187
7 654
8 2705
9 12587
10 67902
11 417065
12 2897432
13 22382255
14 189930004
15 1750561160
16 17380043136
17 184653542135
18 2088649831822
19 25046462480066
20 317295911519901
21 4233450347175663
22 59329632953577985
23 871281036897298464

[1,3,7,20,56,187,654,2705,12587,67902,417065,
 2897432,22382255,189930004,1750561160,17380043136,
 184653542135,2088649831822,25046462480066,
 317295911519901,4233450347175663,
 59329632953577985,871281036897298464]

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Last modified June 7 20:29 EDT 2024. Contains 373206 sequences. (Running on oeis4.)