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A084179 as a simple table

na(n)
00
11
2-1
34
4-5
515
6-22
757
8-93
9220
10-385
11859
12-1574
133381
14-6385
1513380
16-25773
1753143
18-103702
19211585
20-416405
21843756
22-1669801
233368259
24-6690150
2513455325
26-26789257
2753774932
28-107232053
29214978335
30-429124630
31859595529
32-1717012749
333437550076

[0,1,-1,4,-5,15,-22,57,-93,220,-385,859,-1574,
 3381,-6385,13380,-25773,53143,-103702,211585,
 -416405,843756,-1669801,3368259,-6690150,13455325,
 -26789257,53774932,-107232053,214978335,
 -429124630,859595529,-1717012749,3437550076]