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A111595 as a simple table

na(n)
01
10
21
31
4-2
51
60
79
8-6
91
109
11-36
1242
13-12
141
150
16225
17-300
18130
19-20
201
21225
22-1350
232475
24-1380
25315
26-30
271
280
2911025
30-22050
3115435
32-4620
33651
34-42
351
3611025
37-88200
38220500
39-182280
4067830
41-12600
421204
43-56
441
450
46893025
47-2381400
482302020
49-1020600
50235494
51-29736
522052
53-72

[1,0,1,1,-2,1,0,9,-6,1,9,-36,42,-12,1,0,225,-300,
 130,-20,1,225,-1350,2475,-1380,315,-30,1,0,11025,
 -22050,15435,-4620,651,-42,1,11025,-88200,220500,
 -182280,67830,-12600,1204,-56,1,0,893025,-2381400,
 2302020,-1020600,235494,-29736,2052,-72]