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A327643 as a simple table

n a(n)
1 1
2 1
3 1
4 3
5 6
6 24
7 84
8 498
9 2220
10 15108
11 92328
12 773580
13 5636460
14 53563476
15 471562512
16 5270698716
17 52117937052
18 637276396764
19 7317811499736
20 100453675122444
21 1276319138168796
22 19048874583061716
23 270233458572751440
24 4442429353548965628
25 68384217440167826412

[1,1,1,3,6,24,84,498,2220,15108,92328,773580,
 5636460,53563476,471562512,5270698716,52117937052,
 637276396764,7317811499736,100453675122444,
 1276319138168796,19048874583061716,
 270233458572751440,4442429353548965628,
 68384217440167826412]

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Last modified February 23 12:38 EST 2020. Contains 332159 sequences. (Running on oeis4.)