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A120900 as a simple table

n a(n)
0 1
1 1
2 2
3 6
4 19
5 62
6 209
7 722
8 2539
9 9054
10 32654
11 118876
12 436171
13 1611067
14 5984943
15 22344455
16 83786875
17 315397144
18 1191324649
19 4513742858
20 17149228138
21 65318912291
22 249356597492
23 953902701488
24 3656057618727
25 14037222220896

[1,1,2,6,19,62,209,722,2539,9054,32654,118876,
 436171,1611067,5984943,22344455,83786875,
 315397144,1191324649,4513742858,17149228138,
 65318912291,249356597492,953902701488,
 3656057618727,14037222220896]

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Last modified October 20 16:07 EDT 2021. Contains 348111 sequences. (Running on oeis4.)