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A009582 as a simple table

n a(n)
0 0
1 1
2 -1
3 6
4 -18
5 135
6 -795
7 7266
8 -62188
9 669309
10 -7267005
11 90797894
12 -1179693966
13 16915574299
14 -254880171455
15 4143992814482
16 -70922672184120
17 1292106133397017
18 -24733436584847481
19 499532815860896038

[0,1,-1,6,-18,135,-795,7266,-62188,669309,
 -7267005,90797894,-1179693966,16915574299,
 -254880171455,4143992814482,-70922672184120,
 1292106133397017,-24733436584847481,
 499532815860896038]

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Last modified December 2 23:29 EST 2016. Contains 278694 sequences.