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A174966 as a simple table

na(n)
01
11
21
31
4-2
51
61
7-19
8-19
91
101
11-74
12-324
13-74
141
151
16-223
17-2708
18-2708
19-223
201
211
22-594
23-16659
24-45884
25-16659
26-594
271
281
29-1475
30-85839
31-531011
32-531011
33-85839
34-1475
351
361
37-3506
38-394388
39-4852814
40-10777040
41-4852814
42-394388
43-3506
441
451

[1,1,1,1,-2,1,1,-19,-19,1,1,-74,-324,-74,1,1,-223,
 -2708,-2708,-223,1,1,-594,-16659,-45884,-16659,
 -594,1,1,-1475,-85839,-531011,-531011,-85839,
 -1475,1,1,-3506,-394388,-4852814,-10777040,
 -4852814,-394388,-3506,1,1]