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A153274 formatted as a simple table:

n a(n)
0 2
1 6
2 15
3 24
4 105
5 280
6 120
7 945
8 3640
9 9945
10 720
11 10395
12 58240
13 208845
14 576576
15 5040
16 135135
17 1106560
18 5221125
19 17873856
20 49579075
21 40320
22 2027025
23 24344320
24 151412625
25 643458816
26 2131900225
27 5925744000
28 362880
29 34459425
30 608608000

[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]

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.


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