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A122596 as a simple table

n a(n)
0 1
1 2
2 5
3 18
4 85
5 492
6 3360
7 26400
8 234356
9 2318280
10 25278120
11 301143360
12 3891041400
13 54191780160
14 809233528320
15 12897125337600
16 218497018912704
17 3920950622655360
18 74295176671900800
19 1482268147441804800

[1,2,5,18,85,492,3360,26400,234356,2318280,
 25278120,301143360,3891041400,54191780160,
 809233528320,12897125337600,218497018912704,
 3920950622655360,74295176671900800,
 1482268147441804800]

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Last modified March 29 03:51 EDT 2024. Contains 371264 sequences. (Running on oeis4.)