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A193653 as a simple table

n a(n)
0 1
1 2
2 6
3 20
4 70
5 248
6 882
7 3140
8 11182
9 39824
10 141834
11 505148
12 1799110
13 6407624
14 22821090
15 81278516
16 289477726
17 1030990208
18 3671926074
19 13077758636
20 46577128054
21 165886901432
22 590814960402
23 2104218684068
24 7494285973006
25 26691295287152
26 95062457807466

[1,2,6,20,70,248,882,3140,11182,39824,141834,
 505148,1799110,6407624,22821090,81278516,
 289477726,1030990208,3671926074,13077758636,
 46577128054,165886901432,590814960402,
 2104218684068,7494285973006,26691295287152,
 95062457807466]

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Last modified June 20 10:53 EDT 2021. Contains 345162 sequences. (Running on oeis4.)