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A370541 as a simple table

na(n)
02
15
20
3-1
40
5-18
6-15
7-23
8-36
9-25
10-52
11-35
12-42
13-8
1413
154
1696
17100
18208
19227
20388
21434
22499
23709
24670
25837
26883
271057
28775
291044
30819
31643
32535
33-78
34-345
35-970
36-1494
37-3017
38-3142
39-5078
40-6102
41-7711
42-9410
43-11406
44-13148
45-15353
46-17831
47-18841
48-22708
49-22955
50-26117

[2,5,0,-1,0,-18,-15,-23,-36,-25,-52,-35,-42,-8,13,
 4,96,100,208,227,388,434,499,709,670,837,883,1057,
 775,1044,819,643,535,-78,-345,-970,-1494,-3017,
 -3142,-5078,-6102,-7711,-9410,-11406,-13148,
 -15353,-17831,-18841,-22708,-22955,-26117]