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A158471 as a simple table

na(n)
01
11
2-1
31
4-2
51
61
7-4
85
9-2
101
11-7
1217
13-17
146
151
16-11
1745
18-85
1974
20-24
211
22-16
23100
24-310
25499
26-394
27120
281
29-22
30196
31-910
322359
33-3388
342484
35-720
361
37-29
38350
39-2282
408729
41-19901
4226200
43-18108
445040
451
46-37
47582
48-5082
4926985
50-89733
51185408

[1,1,-1,1,-2,1,1,-4,5,-2,1,-7,17,-17,6,1,-11,45,
 -85,74,-24,1,-16,100,-310,499,-394,120,1,-22,196,
 -910,2359,-3388,2484,-720,1,-29,350,-2282,8729,
 -19901,26200,-18108,5040,1,-37,582,-5082,26985,
 -89733,185408]