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A248973 as a simple table

na(n)
00
11
21
32
43
52
6-2
7-2
83
95
105
114
127
138
146
158
165
17-4
18-20
19-28
20-45
21-52
22-70
23-76
24-69
25-48
26-42
27-52
28-79
29-124
30-150
31-196
32-221
33-268
34-292
35-292
365
379
3811
3910
4013
4111
423
43-12
44-19
45-35
46-41
47-58
48-63
49-55
50-33
51-26
52-35
53-61
54-105
55-130
56-175
57-199
58-245
59-268
60-267
61-241
62-241

[0,1,1,2,3,2,-2,-2,3,5,5,4,7,8,6,8,5,-4,-20,-28,
 -45,-52,-70,-76,-69,-48,-42,-52,-79,-124,-150,
 -196,-221,-268,-292,-292,5,9,11,10,13,11,3,-12,
 -19,-35,-41,-58,-63,-55,-33,-26,-35,-61,-105,-130,
 -175,-199,-245,-268,-267,-241,-241]