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A208003 as a simple table

n a(n)
1 9
2 81
3 221
4 536
5 1711
6 4993
7 16742
8 53411
9 182247
10 608142
11 2095301
12 7157363
13 24822376
14 85845073
15 299033933
16 1040987192
17 3636447903
18 12703622001
19 44454269798
20 155590727603
21 545028524023
22 1909557999406
23 6693157243061

[9,81,221,536,1711,4993,16742,53411,182247,608142,
 2095301,7157363,24822376,85845073,299033933,
 1040987192,3636447903,12703622001,44454269798,
 155590727603,545028524023,1909557999406,
 6693157243061]

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Last modified August 10 00:32 EDT 2022. Contains 356026 sequences. (Running on oeis4.)