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A013198 as a simple table

n a(n)
0 1
1 0
2 -2
3 12
4 -32
5 72
6 152
7 -3808
8 48448
9 -333440
10 289408
11 26461952
12 -393649024
13 4126861312
14 -34249082624
15 -93963415552
16 12871254335488
17 -272828216803328
18 2591959365570560
19 6130847346393088

[1,0,-2,12,-32,72,152,-3808,48448,-333440,289408,
 26461952,-393649024,4126861312,-34249082624,
 -93963415552,12871254335488,-272828216803328,
 2591959365570560,6130847346393088]

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Last modified August 22 17:25 EDT 2014. Contains 245975 sequences.