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A140877 as a simple table

na(n)
14
2-7
36
4-8
5-17
64
717
8-22
9-44
10-16
1112
1251
13-48
14-120
15-96
16-31
1746
18146
19-80
20-336
21-352
22-16
23-113
24140
25412
26-64
27-944
28-1088
2949
30-78
31-372
32360
331160
34224
35-2624
36-3072
3720
38211
39-296
40-1156
41784
423264
431536
44-7168
45-8192

[4,-7,6,-8,-17,4,17,-22,-44,-16,12,51,-48,-120,
 -96,-31,46,146,-80,-336,-352,-16,-113,140,412,-64,
 -944,-1088,49,-78,-372,360,1160,224,-2624,-3072,
 20,211,-296,-1156,784,3264,1536,-7168,-8192]