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A306703 as a simple table

na(n)
01
11
20
31
4-2
51
6-2
71
8-4
97
10-5
117
12-7
1316
14-13
1516
16-33
1738
18-39
1931
20-75
2179
22-92
23118
24-139
25201
26-230
27269
28-264
29494
30-476
31523
32-780
33886
34-1095
351261
36-1533
371857
38-2593
392197
40-3367
414256
42-4240
435816
44-6484
457985
46-9800
4711051
48-12561
4917530
50-17516

[1,1,0,1,-2,1,-2,1,-4,7,-5,7,-7,16,-13,16,-33,38,
 -39,31,-75,79,-92,118,-139,201,-230,269,-264,494,
 -476,523,-780,886,-1095,1261,-1533,1857,-2593,
 2197,-3367,4256,-4240,5816,-6484,7985,-9800,11051,
 -12561,17530,-17516]