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A293998 as a simple table

n a(n)
0 1
1 1
2 3
3 15
4 105
5 945
6 10395
7 45045
8 222951
9 1245257
10 7689707
11 50548041
12 328681355
13 1898148921
14 10938090235
15 64447508901
16 388656309623
17 2372510073525
18 14406809496311
19 86092382481933
20 512757617989667
21 3064484085534721
22 18400499270245971
23 110741448251269561

[1,1,3,15,105,945,10395,45045,222951,1245257,
 7689707,50548041,328681355,1898148921,10938090235,
 64447508901,388656309623,2372510073525,
 14406809496311,86092382481933,512757617989667,
 3064484085534721,18400499270245971,
 110741448251269561]

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Last modified April 24 04:14 EDT 2024. Contains 371918 sequences. (Running on oeis4.)