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A002613 as a simple table

na(n)
11
244
3432
4-1136
5610
6-5568
76048
811456
9-3423
1026840
11-79920
12768
13-5470
14-77952
15263520
1661696
1773090
18-150612
19-84240
20-692960
21-139776
221030080
23-1025568
241410048
25-18525
26-240680
271355616
2810752
29-128222
30-3396480
31-293760

[1,44,432,-1136,610,-5568,6048,11456,-3423,26840,
 -79920,768,-5470,-77952,263520,61696,73090,
 -150612,-84240,-692960,-139776,1030080,-1025568,
 1410048,-18525,-240680,1355616,10752,-128222,
 -3396480,-293760]