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A027860 formatted as a simple table:

n a(n)
0 0
1 0
2 3
3 256
4 6075
5 70656
6 525300
7 2861568
8 12437115
9 45414400
10 144788634
11 412896000
12 1075797268
13 2593575936
14 5863302600
15 12517805568
16 25471460475
17 49597544448
18 93053764671
19 168582124800
20 296526859818

[0,0,3,256,6075,70656,525300,2861568,12437115,
 45414400,144788634,412896000,1075797268,
 2593575936,5863302600,12517805568,25471460475,
 49597544448,93053764671,168582124800,
 296526859818]

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Last modified December 7 23:50 EST 2009. Contains 170430 sequences.


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