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A321544 as a simple table

na(n)
11
2-31
3244
4-1055
53126
6-7564
716808
8-33823
959293
10-96906
11161052
12-257420
13371294
14-521048
15762744
16-1082399
171419858
18-1838083
192476100
20-3297930
214101152
22-4992612
236436344
24-8252812
259768751
26-11510114
2714408200
28-17732440
2920511150
30-23645064
3128629152
32-34636831
3339296688
34-44015598

[1,-31,244,-1055,3126,-7564,16808,-33823,59293,
 -96906,161052,-257420,371294,-521048,762744,
 -1082399,1419858,-1838083,2476100,-3297930,
 4101152,-4992612,6436344,-8252812,9768751,
 -11510114,14408200,-17732440,20511150,-23645064,
 28629152,-34636831,39296688,-44015598]