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A224873 as a simple table

na(n)
11
21
31
43
525
63
717
8329
9329
1017
11155
125325
1314301
145325
15155
162073
17110605
18563013
19563013
20110605
212073
2238227
232918825
2423904881
2545956625
2623904881
272918825
2838227
29929569
3096075665
311150348017
323600524785
333600524785
341150348017
3596075665
36929569

[1,1,1,3,25,3,17,329,329,17,155,5325,14301,5325,
 155,2073,110605,563013,563013,110605,2073,38227,
 2918825,23904881,45956625,23904881,2918825,38227,
 929569,96075665,1150348017,3600524785,3600524785,
 1150348017,96075665,929569]