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A144249 as a simple table

na(n)
11
2-22
3207
4-1036
52551
690
7-19115
846160
9-2208
10-166496
11203828
12203208
13-375150
14-551652
15489006
162516800
17-2361340
18-4512048
193998664
205399616
212581080
22-13068144
23-10074096
2414208912
2512992695
2625642190
27-34987395

[1,-22,207,-1036,2551,90,-19115,46160,-2208,
 -166496,203828,203208,-375150,-551652,489006,
 2516800,-2361340,-4512048,3998664,5399616,2581080,
 -13068144,-10074096,14208912,12992695,25642190,
 -34987395]