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A249769 as a simple table

n a(n)
1 1
2 3
3 2
4 18
5 6
6 114
7 24
8 792
9 120
10 6120
11 720
12 52560
13 5040
14 498960
15 40320
16 5201280
17 362880
18 59149440
19 3628800
20 729388800
21 39916800
22 9699782400
23 479001600
24 138431462400
25 6227020800
26 2110960051200
27 87178291200
28 34261068441600
29 1307674368000
30 589761139968000
31 20922789888000

[1,3,2,18,6,114,24,792,120,6120,720,52560,5040,
 498960,40320,5201280,362880,59149440,3628800,
 729388800,39916800,9699782400,479001600,
 138431462400,6227020800,2110960051200,87178291200,
 34261068441600,1307674368000,589761139968000,
 20922789888000]

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Last modified October 20 03:04 EDT 2021. Contains 348099 sequences. (Running on oeis4.)