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A015124 as a simple table

na(n)
01
11
21
31
4-10
51
61
7111
8111
91
101
11-1220
1213542
13-1220
141
151
1613421
171637362
181637362
1913421
201
211
22-147630
23198134223
24-2177691460
25198134223
26-147630
271
281
291623931
3023974093353
312898705467483
322898705467483
3323974093353
341623931
351
361

[1,1,1,1,-10,1,1,111,111,1,1,-1220,13542,-1220,1,
 1,13421,1637362,1637362,13421,1,1,-147630,
 198134223,-2177691460,198134223,-147630,1,1,
 1623931,23974093353,2898705467483,2898705467483,
 23974093353,1623931,1,1]