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A001434 as a simple table

n a(n)
1 0
2 0
3 1
4 2
5 6
6 21
7 65
8 221
9 771
10 2769
11 10250
12 39243
13 154658
14 628635
15 2632420
16 11353457
17 50411413
18 230341716
19 1082481189
20 5228952960
21 25945377057
22 132140242356
23 690238318754
24 3694876952577

[0,0,1,2,6,21,65,221,771,2769,10250,39243,154658,
 628635,2632420,11353457,50411413,230341716,
 1082481189,5228952960,25945377057,132140242356,
 690238318754,3694876952577]

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Last modified August 6 09:31 EDT 2020. Contains 336245 sequences. (Running on oeis4.)