A176232 - OEIS

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A176232 as a simple table

n	a(n)
0	1
1	1
2	3
3	19
4	459
5	55099
6	39671739
7	199945619659
8	8061807424322619
9	2925468678338137602379
10	10615940739961495538937237819
11	423754383328897950597328272711061579
12	202979027621555455188781938315330372976764219

[1,1,3,19,459,55099,39671739,199945619659, 8061807424322619,2925468678338137602379, 10615940739961495538937237819, 423754383328897950597328272711061579, 202979027621555455188781938315330372976764219]