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A055142 as a simple table

n a(n)
0 1
1 0
2 -2
3 -8
4 -36
5 -224
6 -1880
7 -19872
8 -251888
9 -3712256
10 -62286624
11 -1171487360
12 -24402416192
13 -557542291968
14 -13861636770176
15 -372514645389824
16 -10759590258589440
17 -332386419622387712

[1,0,-2,-8,-36,-224,-1880,-19872,-251888,-3712256,
 -62286624,-1171487360,-24402416192,-557542291968,
 -13861636770176,-372514645389824,
 -10759590258589440,-332386419622387712]

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Last modified June 20 03:21 EDT 2013. Contains 226418 sequences.