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A012399 formatted as a simple table:

n a(n)
0 2
1 -3
2 0
3 -10
4 -32
5 1596
6 -10080
7 27936
8 -19008
9 -4728240
10 113762880
11 -1378522080
12 12151639680
13 -24566643360
14 -3018767431680
15 84947924490240
16 -1424022331422720
17 18489594521756160
18 -42627235124920320

[2,-3,0,-10,-32,1596,-10080,27936,-19008,-4728240,
 113762880,-1378522080,12151639680,-24566643360,
 -3018767431680,84947924490240,-1424022331422720,
 18489594521756160,-42627235124920320]

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Last modified December 20 00:58 EST 2009. Contains 171054 sequences.


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