A094837 - OEIS

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A094837 as a simple table

n	a(n)
1	1
2	2
3	4
4	10
5	24
6	46
7	100
8	225
9	525
10	1225
11	3136
12	7056
13	17640
14	44100
15	108900
16	261360
17	637065
18	1656369
19	4008004
20	10020010
21	25050025
22	64128064
23	155739584
24	393853824
25	1012766976

[1,2,4,10,24,46,100,225,525,1225,3136,7056,17640, 44100,108900,261360,637065,1656369,4008004, 10020010,25050025,64128064,155739584,393853824, 1012766976]