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A086347 formatted as a simple table:

n a(n)
1 1
2 5
3 24
4 116
5 560
6 2704
7 13056
8 63040
9 304384
10 1469696
11 7096320
12 34264064
13 165441536
14 798822400
15 3857055744
16 18623512576
17 89922273280
18 434183143424
19 2096421666816
20 10122419240960

[1,5,24,116,560,2704,13056,63040,304384,1469696,
 7096320,34264064,165441536,798822400,3857055744,
 18623512576,89922273280,434183143424,
 2096421666816,10122419240960]

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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.


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