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A145640 as a simple table

n a(n)
1 1
2 3
3 5
4 35
5 315
6 3465
7 45045
8 45045
9 255255
10 969969
11 29393
12 2028117
13 50702925
14 456326325
15 13233463425
16 820474732350
17 4512611027925
18 4512611027925
19 166966608033225
20 12843585233325
21 526586994566325
22 22643240766351975

[1,3,5,35,315,3465,45045,45045,255255,969969,
 29393,2028117,50702925,456326325,13233463425,
 820474732350,4512611027925,4512611027925,
 166966608033225,12843585233325,526586994566325,
 22643240766351975]

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Last modified August 19 13:48 EDT 2024. Contains 375302 sequences. (Running on oeis4.)