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A194094 as a simple table

na(n)
01
1-4
220
3-64
4164
5-392
6896
7-1920
83908
9-7684
1014632
11-27072
1248896
13-86408
14149760
15-255104
16427652
17-706568
181152020
19-1855296
202954056
21-4654080
227260288
23-11221632
2417194496
25-26131980
2639409960
27-59003008
2887728640
29-129586568
30190226176
31-277587456
32402779396
33-581276160
34834539560
35-1192216320

[1,-4,20,-64,164,-392,896,-1920,3908,-7684,14632,
 -27072,48896,-86408,149760,-255104,427652,-706568,
 1152020,-1855296,2954056,-4654080,7260288,
 -11221632,17194496,-26131980,39409960,-59003008,
 87728640,-129586568,190226176,-277587456,
 402779396,-581276160,834539560,-1192216320]