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A009123 as a simple table

n a(n)
0 1
1 0
2 1
3 -3
4 8
5 -30
6 136
7 -693
8 3968
9 -25260
10 176896
11 -1351383
12 11184128
13 -99680490
14 951878656
15 -9695756073
16 104932671488
17 -1202439837720
18 14544442556416
19 -185185594118763
20 2475749026562048
21 -34674437196568950

[1,0,1,-3,8,-30,136,-693,3968,-25260,176896,
 -1351383,11184128,-99680490,951878656,-9695756073,
 104932671488,-1202439837720,14544442556416,
 -185185594118763,2475749026562048,
 -34674437196568950]

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Last modified October 18 21:22 EDT 2018. Contains 316326 sequences. (Running on oeis4.)