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A168517 as a simple table

na(n)
01
11
21
31
47
51
61
727
827
91
101
1187
12260
1387
141
151
16263
171828
181828
19263
201
211
22779
2311131
2424746
2511131
26779
271
281
292299
3062793
31267515
32267515
3362793
342299
351
361
376799
38338902
392529377
404753074
412529377
42338902
436799
441
451
4620175
471780242
4821935526
4970068408
5070068408
5121935526
521780242
5320175
541

[1,1,1,1,7,1,1,27,27,1,1,87,260,87,1,1,263,1828,
 1828,263,1,1,779,11131,24746,11131,779,1,1,2299,
 62793,267515,267515,62793,2299,1,1,6799,338902,
 2529377,4753074,2529377,338902,6799,1,1,20175,
 1780242,21935526,70068408,70068408,21935526,
 1780242,20175,1]