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A050456 as a simple table

na(n)
11
21
3-80
41
5626
6-80
7-2400
81
96481
10626
11-14640
12-80
1328562
14-2400
15-50080
161
1783522
186481
19-130320
20626
21192000
22-14640
23-279840
24-80
25391251
2628562
27-524960
28-2400
29707282
30-50080
31-923520
321
331171200
3483522
35-1502400
366481
371874162
38-130320

[1,1,-80,1,626,-80,-2400,1,6481,626,-14640,-80,
 28562,-2400,-50080,1,83522,6481,-130320,626,
 192000,-14640,-279840,-80,391251,28562,-524960,
 -2400,707282,-50080,-923520,1,1171200,83522,
 -1502400,6481,1874162,-130320]