A098460 - OEIS

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A098460 as a simple table

n	a(n)
0	1
1	1
2	5
3	33
4	321
5	3945
6	59445
7	1056825
8	21677985
9	503799345
10	13084021125
11	375524312625
12	11803392302625
13	403235809601625
14	14876913457531125
15	589498927632239625
16	24969077812488434625
17	1125803018759825030625

[1,1,5,33,321,3945,59445,1056825,21677985, 503799345,13084021125,375524312625,11803392302625, 403235809601625,14876913457531125, 589498927632239625,24969077812488434625, 1125803018759825030625]