A003915 - OEIS

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A003915 as a simple table

n	a(n)
1	1
2	133
3	133
4	760
5	3344
6	8778
7	8778
8	8910
9	9405
10	16929
11	35112
12	35112
13	65835
14	65835
15	69255
16	69255
17	214016
18	267520
19	270864
20	365750
21	374528
22	374528
23	406296
24	653125
25	656250
26	656250
27	718200
28	718200
29	1053360

[1,133,133,760,3344,8778,8778,8910,9405,16929, 35112,35112,65835,65835,69255,69255,214016,267520, 270864,365750,374528,374528,406296,653125,656250, 656250,718200,718200,1053360]