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A220747 as a simple table

n a(n)
0 1
1 3
2 15
3 105
4 315
5 3465
6 45045
7 135135
8 2297295
9 43648605
10 130945815
11 3011753745
12 75293843625
13 225881530875
14 6550564395375
15 203067496256625
16 609202488769875
17 21322087106945625
18 788917222956988125

[1,3,15,105,315,3465,45045,135135,2297295,
 43648605,130945815,3011753745,75293843625,
 225881530875,6550564395375,203067496256625,
 609202488769875,21322087106945625,
 788917222956988125]

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Last modified May 10 02:28 EDT 2024. Contains 372354 sequences. (Running on oeis4.)