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A143478 as a simple table

na(n)
00
11
2-1
312
4-12
591
6-89
7560
8-526
93061
10-2715
1115526
12-12779
1374893
14-56092
15348808
16-232184
171584273
18-909357
197065982
20-3354913
2131100725
22-11473678
23135587365
24-34883109
25587116592
26-82703752
272530527727
28-52581912
2910874166572
301107267567
3146648306254

[0,1,-1,12,-12,91,-89,560,-526,3061,-2715,15526,
 -12779,74893,-56092,348808,-232184,1584273,
 -909357,7065982,-3354913,31100725,-11473678,
 135587365,-34883109,587116592,-82703752,
 2530527727,-52581912,10874166572,1107267567,
 46648306254]