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A180735 as a simple table

na(n)
01
11
2-1
3-3
4-3
51
67
79
81
9-15
10-25
11-11
1229
1365
1447
15-47
16-159
17-159
1847
19365
20477
2165
22-777
23-1319
24-607
251489
263415
272533
28-2371
29-8319
30-8481
312209
3219009
3325281
344063
35-40227
36-69571
37-33407
3876391
39179369
40136385

[1,1,-1,-3,-3,1,7,9,1,-15,-25,-11,29,65,47,-47,
 -159,-159,47,365,477,65,-777,-1319,-607,1489,3415,
 2533,-2371,-8319,-8481,2209,19009,25281,4063,
 -40227,-69571,-33407,76391,179369,136385]