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A143582 formatted as a simple table:

n a(n)
1 1
2 3
3 20
4 56
5 576
6 1408
7 6656
8 5120
9 278528
10 622592
11 2752512
12 6029312
13 52428800
14 113246208
15 486539264
16 1040187392
17 11811160064
18 15032385536
19 317827579904
20 223338299392
21 5634997092352
22 11819749998592
23 3298534883328

[1,3,20,56,576,1408,6656,5120,278528,622592,
 2752512,6029312,52428800,113246208,486539264,
 1040187392,11811160064,15032385536,317827579904,
 223338299392,5634997092352,11819749998592,
 3298534883328]

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Last modified December 1 19:22 EST 2009. Contains 167811 sequences.


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