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A261369 as a simple table

na(n)
01
1-2
25
3-12
424
5-46
686
7-152
8262
9-442
10725
11-1168
121852
13-2886
144436
15-6736
1610103
17-14994
1822040
19-32092
2046336
21-66380
2294378
23-133256
24186926
25-260576
26361126
27-497716
28682340
29-930774
301263624
31-1707672
322297737
33-3078850
344109022
35-5462924
367236280

[1,-2,5,-12,24,-46,86,-152,262,-442,725,-1168,
 1852,-2886,4436,-6736,10103,-14994,22040,-32092,
 46336,-66380,94378,-133256,186926,-260576,361126,
 -497716,682340,-930774,1263624,-1707672,2297737,
 -3078850,4109022,-5462924,7236280]