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A189588 as a simple table

n a(n)
1 1
2 1
3 1
4 4
5 13
6 35
7 73
8 147
9 322
10 746
11 1758
12 4042
13 9114
14 20444
15 46217
16 105155
17 239481
18 544259
19 1234420
20 2798863
21 6350149
22 14416419
23 32732101
24 74301920
25 168633936
26 382715304
27 868630024
28 1971599952
29 4475144212
30 10157494573
31 23054646277

[1,1,1,4,13,35,73,147,322,746,1758,4042,9114,
 20444,46217,105155,239481,544259,1234420,2798863,
 6350149,14416419,32732101,74301920,168633936,
 382715304,868630024,1971599952,4475144212,
 10157494573,23054646277]

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Last modified January 31 22:04 EST 2023. Contains 359981 sequences. (Running on oeis4.)