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A081499 as a simple table

na(n)
11
22
34
46
58
611
712
816
915
1020
1116
1222
1314
1421
158
1616
17-3
186
19-20
20-10
21-44
22-33
23-76
24-64
25-117
26-104
27-168
28-154
29-230
30-215
31-304
32-288
33-391
34-374
35-492
36-474
37-608
38-589
39-740
40-720
41-889
42-868
43-1056
44-1034
45-1242
46-1219
47-1448
48-1424
49-1675
50-1650
51-1924
52-1898
53-2196
54-2169
55-2492
56-2464
57-2813

[1,2,4,6,8,11,12,16,15,20,16,22,14,21,8,16,-3,6,
 -20,-10,-44,-33,-76,-64,-117,-104,-168,-154,-230,
 -215,-304,-288,-391,-374,-492,-474,-608,-589,-740,
 -720,-889,-868,-1056,-1034,-1242,-1219,-1448,
 -1424,-1675,-1650,-1924,-1898,-2196,-2169,-2492,
 -2464,-2813]