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A171191 as a simple table

n a(n)
0 1
1 2
2 7
3 20
4 73
5 263
6 1111
7 4451
8 20161
9 85304
10 401401
11 1755593
12 8465311
13 37866818
14 185756605
15 844627115
16 4196759383
17 19321634594
18 96962969047
19 450810982796
20 2280344734891
21 10686378006479
22 54406554842287
23 256637809742444

[1,2,7,20,73,263,1111,4451,20161,85304,401401,
 1755593,8465311,37866818,185756605,844627115,
 4196759383,19321634594,96962969047,450810982796,
 2280344734891,10686378006479,54406554842287,
 256637809742444]

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Last modified August 13 13:57 EDT 2024. Contains 375142 sequences. (Running on oeis4.)