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A002612 as a simple table

na(n)
11
212
348
416
5-414
6-960
7672
84800
92721
10-9064
11-8880
126912
13-2398
14-13440
1529280
1630976
17-10878
1857228
19-9360
20-252384
21-53760
22177600
23-113952
24107520
25436131
26-16488
27150624
2896768
29-915678
30-585600
31-32640
32248832
33710400
34-466408

[1,12,48,16,-414,-960,672,4800,2721,-9064,-8880,
 6912,-2398,-13440,29280,30976,-10878,57228,-9360,
 -252384,-53760,177600,-113952,107520,436131,
 -16488,150624,96768,-915678,-585600,-32640,248832,
 710400,-466408]