A184143 - OEIS

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A184143 as a simple table

n	a(n)
1	9
2	129
3	3351
4	136564
5	6979061
6	371484319
7	18470742266
8	818230288201
9	31887670171373
10	1096628939510047
11	33575397457792227
12	924491977646105742
13	23115171441961340021
14	529351592443419400759
15	11186675629728308277811

[9,129,3351,136564,6979061,371484319,18470742266, 818230288201,31887670171373,1096628939510047, 33575397457792227,924491977646105742, 23115171441961340021,529351592443419400759, 11186675629728308277811]