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A201381 as a simple table

n a(n)
1 2
2 9
3 115
4 483
5 7148
6 24779
7 295813
8 804538
9 7711613
10 17135660
11 137991357
12 261853930
13 1838296465
14 3078156753
15 19352193027
16 29273561002
17 168059197372
18 233637796573
19 1242746736360
20 1608517392555
21 8015798428649
22 9756858004272

[2,9,115,483,7148,24779,295813,804538,7711613,
 17135660,137991357,261853930,1838296465,
 3078156753,19352193027,29273561002,168059197372,
 233637796573,1242746736360,1608517392555,
 8015798428649,9756858004272]

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Last modified May 27 13:04 EDT 2022. Contains 354097 sequences. (Running on oeis4.)