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A193663 as a simple table

n a(n)
0 0
1 1
2 1
3 9
4 17
5 80
6 198
7 748
8 2107
9 7236
10 21680
11 71279
12 219879
13 708436
14 2215513
15 7071210
16 22256567
17 70723367
18 223272153
19 708017329
20 2238347440
21 7091170416
22 22433032016

[0,1,1,9,17,80,198,748,2107,7236,21680,71279,
 219879,708436,2215513,7071210,22256567,70723367,
 223272153,708017329,2238347440,7091170416,
 22433032016]

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Last modified April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)