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A285070 as a simple table

na(n)
01
1-1
20
30
40
5-5
65
70
80
9-9
1019
11-10
120
13-13
1458
15-55
1610
17-17
18118
19-191
2095
21-26
22223
23-512
24400
25-116
26362
27-1175
281329
29-564
30609
31-2368
323593
33-2218
341246
35-4402
368600
37-7118
383433
39-7792
4018503
41-19778
4210702
43-13924
4437009
45-49017
4632097
47-27141

[1,-1,0,0,0,-5,5,0,0,-9,19,-10,0,-13,58,-55,10,
 -17,118,-191,95,-26,223,-512,400,-116,362,-1175,
 1329,-564,609,-2368,3593,-2218,1246,-4402,8600,
 -7118,3433,-7792,18503,-19778,10702,-13924,37009,
 -49017,32097,-27141]