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A118387
as a simple table
n
a(n)
1
1
2
2
3
5
4
15
5
33
6
40
7
132
8
220
9
352
10
1258
11
2661
12
3903
13
9787
14
12989
15
17961
16
31373
17
33076
18
55262
19
110624
[1,2,5,15,33,40,132,220,352,1258,2661,3903,9787, 12989,17961,31373,33076,55262,110624]