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A153274 as a simple table

n a(n)
1 2
2 6
3 15
4 24
5 105
6 280
7 120
8 945
9 3640
10 9945
11 720
12 10395
13 58240
14 208845
15 576576
16 5040
17 135135
18 1106560
19 5221125
20 17873856
21 49579075
22 40320
23 2027025
24 24344320
25 151412625
26 643458816
27 2131900225
28 5925744000
29 362880
30 34459425
31 608608000
32 4996616625
33 26381811456
34 104463111025
35 337767408000
36 939536222625

[2,6,15,24,105,280,120,945,3640,9945,720,10395,
 58240,208845,576576,5040,135135,1106560,5221125,
 17873856,49579075,40320,2027025,24344320,
 151412625,643458816,2131900225,5925744000,362880,
 34459425,608608000,4996616625,26381811456,
 104463111025,337767408000,939536222625]

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Last modified April 11 19:49 EDT 2021. Contains 342888 sequences. (Running on oeis4.)