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A141288 as a simple table

n a(n)
0 1
1 1
2 2
3 6
4 12
5 84
6 252
7 252
8 504
9 2520
10 17640
11 52920
12 52920
13 52920
14 52920
15 476280
16 952560
17 952560
18 4762800
19 61916400
20 185749200
21 928746000
22 928746000
23 928746000
24 928746000
25 4643730000
26 13931190000
27 13931190000
28 13931190000
29 13931190000

[1,1,2,6,12,84,252,252,504,2520,17640,52920,52920,
 52920,52920,476280,952560,952560,4762800,61916400,
 185749200,928746000,928746000,928746000,928746000,
 4643730000,13931190000,13931190000,13931190000,
 13931190000]

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Last modified April 20 06:19 EDT 2019. Contains 322294 sequences. (Running on oeis4.)