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A131569 as a simple table

n a(n)
1 1
2 2
3 8
4 24
5 71
6 198
7 541
8 1452
9 3862
10 10208
11 26885
12 70644
13 185369
14 485982
15 1273420
16 3335640
17 8735707
18 22875050
19 59895221
20 156819960
21 410579786
22 1074943872
23 2814291433
24 7367994504
25 19289795761
26 50501560538
27 132215157296
28 346144350552
29 906218605007

[1,2,8,24,71,198,541,1452,3862,10208,26885,70644,
 185369,485982,1273420,3335640,8735707,22875050,
 59895221,156819960,410579786,1074943872,
 2814291433,7367994504,19289795761,50501560538,
 132215157296,346144350552,906218605007]

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Last modified May 20 20:16 EDT 2019. Contains 323426 sequences. (Running on oeis4.)