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A146475 as a simple table

n a(n)
1 1
2 1
3 1
4 1
5 1
6 1
7 9
8 15
9 35
10 57
11 245
12 579
13 3057
14 8465
15 49975
16 173815
17 1305505
18 5674409
19 52338659
20 276967501
21 3125019047
22 20455456921
23 286529633207
24 2318729204115 

[1,1,1,1,1,1,9,15,35,57,245,579,3057,8465,49975,
 173815,1305505,5674409,52338659,276967501,
 3125019047,20455456921,286529633207,2318729204115]

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Last modified April 20 10:35 EDT 2024. Contains 371827 sequences. (Running on oeis4.)