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A096322
as a simple table
n
a(n)
1
1
2
3
3
9
4
25
5
66
6
165
7
402
8
943
9
2163
10
4835
11
10598
12
22785
13
48215
14
100470
15
206620
16
419662
17
842928
[1,3,9,25,66,165,402,943,2163,4835,10598,22785, 48215,100470,206620,419662,842928]