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A291148 as a simple table

na(n)
01
1-1
20
3-1
40
5-1
6-1
7-1
8-2
9-2
10-4
11-4
12-7
13-9
14-13
15-19
16-25
17-38
18-51
19-75
20-104
21-149
22-211
23-298
24-426
25-600
26-857
27-1211
28-1724
29-2444
30-3471
31-4930
32-6995
33-9940
34-14104
35-20038
36-28444
37-40397
38-57362
39-81453
40-115675
41-164250
42-233262
43-331227

[1,-1,0,-1,0,-1,-1,-1,-2,-2,-4,-4,-7,-9,-13,-19,
 -25,-38,-51,-75,-104,-149,-211,-298,-426,-600,
 -857,-1211,-1724,-2444,-3471,-4930,-6995,-9940,
 -14104,-20038,-28444,-40397,-57362,-81453,-115675,
 -164250,-233262,-331227]