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A145934 as a simple table

na(n)
01
11
2-5
3-11
419
585
6-29
7-539
8-365
92869
105059
11-12155
12-42509
1330421
14285475
15102949
16-1609901
17-2227595
187431811
1920797381
20-23793485
21-148577771
22-5816861
23885649765
24920550931
25-4393347659
26-9916653245
2716443432709

[1,1,-5,-11,19,85,-29,-539,-365,2869,5059,-12155,
 -42509,30421,285475,102949,-1609901,-2227595,
 7431811,20797381,-23793485,-148577771,-5816861,
 885649765,920550931,-4393347659,-9916653245,
 16443432709]