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A066975 as a simple table

na(n)
11
21
31
41
53
61
73
81
91
101
113
1217
131
145
159
161
173
185
193
201
213
225
233
241
253
261
271
2817
293
3041
311
321
333
345
35129
361
371
385
391
401
413
425
433
4417
459
465
473
481
493
501
519
521
533
545
553
561
573
585
593
6017
613
621
633
641
6533
665
673
681
699
70115825
713
7297
733
745
7599
761
77129
785
793
801
811
825
833
8417
8511
865
873
881
893
9035425
911
921

[1,1,1,1,3,1,3,1,1,1,3,17,1,5,9,1,3,5,3,1,3,5,3,1,
 3,1,1,17,3,41,1,1,3,5,129,1,1,5,1,1,3,5,3,17,9,5,
 3,1,3,1,9,1,3,5,3,1,3,5,3,17,3,1,3,1,33,5,3,1,9,
 115825,3,97,3,5,99,1,129,5,3,1,1,5,3,17,11,5,3,1,
 3,35425,1,1]