A146234 - OEIS

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A146234 as a simple table

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	9
8	9
9	33
10	33
11	113
12	113
13	1393
14	1393
15	59521
16	59521
17	1585365
18	1585365
19	62771429
20	62771429
21	6390256297
22	6390256297
23	1169289395909
24	1169289395909

[1,1,1,1,1,1,9,9,33,33,113,113,1393,1393,59521, 59521,1585365,1585365,62771429,62771429, 6390256297,6390256297,1169289395909,1169289395909]