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A200080
as a simple table
n
a(n)
1
1
2
7
3
17
4
43
5
111
6
245
7
429
8
855
9
1863
10
3573
11
10241
12
30645
13
50043
14
160499
15
149009
16
149121
17
755895
18
3366835
[1,7,17,43,111,245,429,855,1863,3573,10241,30645, 50043,160499,149009,149121,755895,3366835]